The United States Senate is the upper chamber of the United States Congress. Senators have been directly elected by state-wide popular vote since the Seventeenth Amendment to the United States Constitution in 1913. A senate term is six years with no term limit. Every two years a third of the seats are up for election. Some years also have a few special elections to fill vacancies. Each state has two senators elected in different years. There were 96 senators from 1912 to 1960 and 100 since then. The Senate has been dominated by Democrats (D) and Republicans (R) in the whole period.
Key
[edit]C# | Conservative |
D# | Democratic |
FL# | Farmer–Labor |
I# | Independent |
ID# | Independent Democratic |
P# | Progressive |
R# | Republican |
V# | Vacant |
Seats on election are shown in bold.
Re-elected: The sitting senator is elected for another term.
Hold: A new candidate from the same party is elected.
Gain: The party did not have the seat before.
Consider for example the Democrats (D) in 1914:
- 36 sitting Democrats (D1 to D36) were not on election.
- 14 sitting Democrats (D37 to D50) were re-elected (D50 had been appointed to fill a vacancy and is shown as an elected hold).
- 3 new Democrats (D51 to D53) held seats by replacing other Democrats.
- 3 new Democrats (D54 to D56) gained seats the Democrats did not have before.
1914
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38
Re-elected |
D37
Re-elected |
D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39
Re-elected |
D40
Re-elected |
D41
Re-elected |
D42
Re-elected |
D43
Re-elected |
D44
Re-elected |
D45
Re-elected |
D46
Re-elected |
D47
Re-elected |
D48
Re-elected |
Majority → | D49
Re-elected | ||||||||
R39
Hold |
P1 | D56
Gain |
D55
Gain |
D54
Gain |
D53
Hold |
D52
Hold |
D51
Hold |
D50
Elected[a] Hold | |
R38
Hold |
R37
Hold |
R36
Re-elected |
R35
Re-elected |
R34
Re-elected |
R33
Re-elected |
R32
Re-elected |
R31
Re-elected |
R30
Re-elected |
R29
Re-elected |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27
Re-elected |
R28
Re-elected |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1916
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38
Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39
Re-elected |
D40
Re-elected |
D41
Re-elected |
D42
Re-elected |
D43
Re-elected |
D44
Re-elected |
D45
Re-elected |
D46
Re-elected |
D47
Hold |
D48
Hold |
Majority → | D49
Hold | ||||||||
R39
Gain |
R40
Gain |
R41
Gain |
R42
Gain |
D54
Gain |
D53
Gain |
D52
Gain |
D51
Gain |
D50
Gain | |
R38
Gain |
R37
Gain |
R36
Gain |
R35
Hold |
R34
Hold |
R33
Hold |
R32
Hold |
R31
Re-elected |
R30
Re-elected |
R29
Re-elected |
R19 | R20 | R21 | R22 | R23 | R24 | R25
Re-elected |
R26
Re-elected |
R27
Re-elected |
R28
Re-elected |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1918
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38
Re-elected |
D37
Re-elected |
D36
Re-elected |
D35
Re-elected |
D34
Re-elected |
D33
Re-elected |
D32
Re-elected |
D31
Re-elected |
D30 | D29 |
D39
Re-elected |
D40
Elected[a] |
D41
Elected[a] |
D42
Hold |
D43
Hold |
D44
Hold |
D45
Hold |
D46
Hold |
D47
Gain |
R49
Gain |
Majority → | |||||||||
R39
Hold |
R40
Hold |
R41
Hold |
R42
Hold |
R43
Gain |
R44
Gain |
R45
Gain |
R46
Gain |
R47
Gain |
R48
Gain |
R38
Hold |
R37
Re-elected |
R36
Re-elected |
R35
Re-elected |
R34
Re-elected |
R33
Re-elected |
R32
Re-elected |
R31
Re-elected |
R30
Re-elected |
R29
Re-elected |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1920
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
R59
Gain |
D37
Hold |
D36
Hold |
D35
Hold |
D34
Hold |
D33
Elected[a] |
D32
Re-elected |
D31
Re-elected |
D30
Re-elected |
D29
Re-elected |
R58
Gain |
R57
Gain |
R56
Gain |
R55
Gain |
R54
Gain |
R53
Gain |
R52
Gain |
R51
Gain |
R50
Gain |
R49
Gain |
Majority → | |||||||||
R39
Re-elected |
R40
Re-elected |
R41
Re-elected |
R42
Re-elected |
R43
Re-elected |
R44
Re-elected |
R45
Re-elected |
R46
Hold |
R47
Hold |
R48
Hold |
R38
Re-elected |
R37
Re-elected |
R36
Re-elected |
R35
Re-elected |
R34 | R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1922
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21
Re-elected |
D22
Gain[b] Re-elected |
D23
Re-elected |
D24
Hold |
D25Gain | D26Gain | D27
Gain |
D28
Hold |
D38
Re-elected |
D37
Hold |
D36
Re-elected |
D35
Re-elected |
D34
Re-elected |
D33
Re-elected |
D32
Gain |
D31
Hold |
D30
Hold |
D29
Re-elected |
D39
Re-elected |
D40
Gain |
D41
Gain |
D42
Re-elected |
FL1
Gain |
R53
Gain |
R52
Gain |
R51
Hold |
R50
Hold |
R49
Hold |
Majority → | |||||||||
R39 | R40 | R41 | R42
Re-elected |
R43
Re-elected |
R44
Re-elected |
R45
Re-elected |
R46
Re-elected |
R47
Elected[a] Re-elected |
R48
Elected[a] |
R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1924
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38
Hold |
D37
Re-elected |
D36
Re-elected |
D35
Re-elected |
D34
Re-elected |
D33
Re-elected |
D32
Re-elected |
D31
Re-elected |
D30
Re-elected |
D29
Re-elected |
D39
Hold |
D40
Gain |
FL1 | R55
Gain |
R54
Gain |
R53
Gain |
R52
Gain |
R51
Gain |
R50
Hold |
R49
Hold |
Majority → | |||||||||
R39
Re-elected |
R40
Re-elected |
R41
Re-elected |
R42
Re-elected |
R43
Re-elected |
R44
Elected[a] Re-elected |
R45
Elected Re-elected |
R46
Hold |
R47
Hold |
R48
Hold |
R38
Re-elected |
R37
Re-elected |
R36
Re-elected |
R35
Re-elected |
R34
Re-elected |
R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1926
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 | D31 | D30 | D29 |
D39 Hold |
D40 Gain |
D41 Gain |
D42 Gain |
D43 Gain |
D44 Gain |
D45 Gain |
FL1 | R50 Ran |
R49 Hold |
Majority → | |||||||||
R39 Re-elected |
R40 Re-elected |
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Hold |
R46 Hold |
R47 Hold |
R48 Hold |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1928
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D30 Re-elected |
D29 Re-elected |
D39 Re-elected |
D40 Hold |
FL1 Re-elected |
V1 | V2 | R53 Gain |
R52 Gain |
R51 Gain |
R50 Gain |
R49 Gain |
Majority → | R48 Gain | ||||||||
R39 Re-elected |
R40 Re-elected |
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Elected |
R46 Elected |
R47 Hold | |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 | R34 | R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1930
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 Re-elected |
D28 Re-elected |
D38 Hold |
D37 Hold |
D36 Hold |
D35 Hold |
D34 Hold |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D30 Re-elected |
D29 Re-elected |
D39 Gain |
D40 Gain |
D41 Gain |
D42 Gain |
D43 Gain |
D44 Gain |
D45 Gain |
FL1 | R50 Gain |
R49 Hold |
Majority → | |||||||||
R39 Re-elected |
R40 Re-elected |
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Hold |
R48 Hold |
R38 Re-elected |
R37 | R36 | R35 | R34 | R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1932
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Hold |
D46 Hold |
D47 Hold |
D48 Gain |
Majority → | D49 Gain | ||||||||
D58 Gain |
D57 Gain |
D56 Gain |
D55 Gain |
D54 Gain |
D53 Gain |
D52 Gain |
D51 Gain |
D50 Gain | |
D59 Gain |
FL1 | R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1934
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 | D40 | D41 | D42 | D43 | D44 | D45 | D45 | D47 Re-elected |
D48 Re-elected |
Majority → | D49 Re-elected | ||||||||
D58 Hold |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected |
D51 Re-elected |
D50 Re-elected | |
D59 Hold |
D60 Hold |
D61 Gain |
D62 Gain |
D63 Gain |
D64 Gain |
D65 Gain |
D66 Gain |
D67 Gain |
D68 Gain |
R19 Re-elected |
R20 Re-elected |
R21 Re-elected |
R22 Re-elected |
R23 Re-elected |
R24 Re-elected |
R25 Re-elected |
P1 Re-elected new party |
FL1 Re-elected |
D69 Gain |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1936
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 | D40 | D41 | D42 | D43 | D44 | D45 | D45 | D46 | D47 |
Majority → | D49 | ||||||||
D58 Re-elected |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected |
D51 Re-elected |
D50 | |
D59 Re-elected |
D60 Re-elected |
D61 Re-elected |
D62 Re-elected |
D63 Re-elected |
D64 Re-elected |
D65 Re-elected |
D66 Hold |
D67 Hold |
D68 Hold |
FL1 | FL2 Hold |
P1 | V1 | D74 Gain |
D73 Gain |
D72 Gain |
D71 Gain |
D70 Gain |
D69 Gain |
I1 Re-elected new party |
R17 Gain |
R16 Hold |
R15 Re-elected |
R14 Re-elected |
R13 Re-elected |
R12 Re-elected |
R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1938
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 | D40 | D41 | D42 | D43 | D44 | D45 | D46 | D47 | D48 |
Majority → | D49 Re-elected | ||||||||
D58 Re-elected |
D57 Hold |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Hold |
D51 Re-elected |
D50 Re-elected | |
D59 Re-elected |
D60 Re-elected |
D61 Re-elected |
D62 Re-elected |
D63 Re-elected |
D64 Re-elected |
D65 Re-elected |
D66 Re-elected |
D67 Re-elected |
D68 Hold |
R19 Gain |
R20 Gain |
R21 Gain |
R22 Gain |
P1 | FL1 | FL2 | I1 | D70 Re-elected |
D69 Re-elected |
R18 Gain |
R17 Gain |
R16 Gain |
R15 Re-elected |
R14 Re-elected |
R13 Re-elected |
R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1940
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 | D40 | D41 | D42 | D43 | D44 | D45 | D46 | D47 Re-elected |
D48 Re-elected |
Majority → | D49 Re-elected | ||||||||
D58 Re-elected |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected |
D51 Re-elected |
D50 Re-elected | |
D59 Re-elected |
D60 Re-elected |
D61 Re-elected |
D62 Re-elected |
D63 Hold |
D64 Hold |
D65 Hold |
D66 Hold |
D67 Gain |
I1 |
R19 Re-elected |
R20 Re-elected |
R21 Re-elected |
R22 Hold |
R23 Hold |
R24 Gain |
R25 Gain |
R26 Gain |
R27 Gain |
P1 Re-elected |
R18 Re-elected |
R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1942
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 | D40 | D41 | D42 | D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
Majority → | D49 Re-elected | ||||||||
P1 | D57 Hold |
D56 Hold |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected |
D51 Re-elected |
D50 Re-elected | |
R38 Gain |
R37 Gain |
R36 Gain |
R35 Gain |
R34 Gain |
R33 Gain |
R32 Gain |
R31 Gain |
R30 Gain |
R29 Re-elected |
R19 | R20 | R21 Re-elected |
R22 Re-elected |
R23 Re-elected |
R24 Re-elected |
R25 Re-elected |
R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1944
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
Majority → | D49 Re-elected | ||||||||
D58 Gain |
D57 Gain |
D56 Gain |
D55 Hold |
D54 Hold |
D53 Hold |
D52 Hold |
D51 Hold |
D50 Re-elected | |
P1 | R37 Gain |
R36 Gain |
R35 Gain |
R34 Hold |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R30 Re-elected |
R29 Re-elected |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 Re-elected |
R28 Re-elected |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1946
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Hold |
D45 Hold |
D46 Hold |
R50 Gain |
R49 Gain |
Majority → | R48 Gain | ||||||||
R39 Hold |
R40 Gain |
R41 Gain |
R42 Gain |
R43 Gain |
R44 Gain |
R45 Gain |
R46 Gain |
R47 Gain | |
R38 Hold |
R37 Hold |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R30 Re-elected |
R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1948
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Hold |
D43 Hold |
D44 Hold |
D45 Hold |
D46 Gain |
D47 Gain |
D48 Gain |
Majority → | D49 Gain | ||||||||
R39 Hold |
R40 Hold |
R41 Hold |
R42 Hold |
D54 Gain |
D53 Gain |
D52 Gain |
D51 Gain |
D50 Gain | |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1950
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 | D33 | D32 | D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Hold |
D47 Hold |
D48 Hold |
Majority → | D49 Gain | ||||||||
R39 Re-elected |
R40 Re-elected |
R41 Hold |
R42 Hold |
R43 Gain |
R44 Gain |
R45 Gain |
R46 Gain |
R47 Gain | |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1952
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D38 Re-elected |
D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Hold |
D44 Hold |
D45 Gain |
D46 Gain |
D47 Gain |
D48 Gain |
Majority using VP's vote ↓ | |||||||||
R39 Re-elected |
R40 Re-elected |
R41 Re-elected |
R42 Re-elected |
R43 Hold |
R44 Gain |
R45 Gain |
R46 Gain |
R47 Gain |
R48 Gain |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R30 Re-elected |
R29 Re-elected |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1954
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 Re-elected |
D28 Re-elected |
D38 Re-elected |
D37 Hold |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D30 Re-elected |
D29 Re-elected |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Hold |
D45 Gain |
D46 Gain |
D47 Gain |
D48 Gain |
Plurality ↑ | |||||||||
R39 Re-elected |
R40 Re-elected |
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Hold |
R45 Hold |
R46 Gain |
R47 Gain |
I1 |
R38 Re-elected |
R37 | R36 | R35 | R34 | R33 | R32 | R31 | R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1956
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 | D33 | D32 | D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Hold |
D48 Gain |
Majority → | D49 Gain | ||||||||
R39 Re-elected |
R40 Re-elected |
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Gain |
R45 Gain |
D51 Gain |
D50 Gain | |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R30 | R29 |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1958
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ||
D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 | D10 | D9 |
D19 | D20 | D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 |
D38 Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 | D30 | D29 |
D39 Re-elected |
D40 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
Majority → | D49 Re-elected | ||||||||
D58 Gain |
D57 Gain |
D56 Gain |
D55 Gain |
D54 Gain |
D53 Gain |
D52 Gain |
D51 Gain |
D50 Gain | |
D59 Gain |
D60 Gain |
D61 Gain |
R35 Hold |
R34 Hold |
R33 Hold |
R32 Re-elected |
R31 Re-elected |
R30 Re-elected |
R29 Re-elected |
R19 | R20 | R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 Re-elected |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 | R10 | R9 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
1960
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 | D42 | D43 | D44 | D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
D60 Re-elected |
D59 Re-elected |
D58 Re-elected |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected | |
D61 Re-elected |
D62 Re-elected |
D63 Hold |
D64 Hold |
R36 Gain |
R35 Gain |
R34 Hold |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 Re-elected |
R25 Re-elected |
R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1962
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 | D42 | D43 | D44 | D45 | D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
D60 Re-elected |
D59 Re-elected |
D58 Re-elected |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected | |
D61 Re-elected |
D62 Re-elected |
D63 Hold |
D64 Gain |
D65 Gain |
D66 Gain |
D67 Gain |
D68 Gain |
R32 Gain |
R31 Re-elected |
R21 | R22 Re-elected |
R23 Re-elected |
R24 Re-elected |
R25 Re-elected |
R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1964
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 | D42 | D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
D60 Re-elected |
D59 Re-elected |
D58 Re-elected |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected | |
D61 Re-elected |
D62 Re-elected |
D63 Re-elected |
D64 Re-elected |
D65 Re-elected |
D66 Gain |
D67 Gain |
D68 Gain |
R32 Gain |
R31 Hold |
R21 | R22 | R23 | R24 | R25 | R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1966
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 | D42 | D43 | D44 | D45 | D46 | D47 | D48 | D49 | D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
D60 Re-elected |
D59 Re-elected |
D58 Re-elected |
D57 Re-elected |
D56 Re-elected |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected | |
D61 Re-elected |
D62 Re-elected |
D63 Re-elected |
D64 Hold |
R36 Gain |
R35 Gain |
R34 Gain |
R33 Hold |
R32 Hold |
R31 Re-elected |
R21 Re-elected |
R22 Re-elected |
R23 Re-elected |
R24 Re-elected |
R25 Re-elected |
R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 Re-elected |
R19 Re-elected |
R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1968
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
R41 Gain |
R42 Gain |
D58 Gain |
D57 Gain |
D56 Hold |
D55 Hold |
D54 Hold |
D53 Re-elected |
D52 Re-elected | |
R40 Gain |
R39 Gain |
R38 Gain |
R37 Gain |
R36 Gain |
R35 Hold |
R34 Hold |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1970
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Hold |
Majority → | D51 Hold | ||||||||
R41 Hold |
R42 Gain |
R43 Gain |
R44 Gain |
R45 Gain |
C1 Gain |
I1 Re-elected new party |
D53 Gain |
D52 Hold | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1972
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Hold |
D50 Hold |
Majority → | D51 Gain | ||||||||
R41 Gain |
R42 Gain |
C1 | I1 | D56 Gain |
D55 Gain |
D54 Gain |
D53 Gain |
D52 Gain | |
R40 Gain |
R39 Gain |
R38 Hold |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1974
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
D60 Gain |
D59 Gain |
D58 Gain |
D57 Hold |
D56 Hold |
D55 Hold |
D54 Hold |
D53 Re-elected |
D52 Re-elected | |
I1 | C1 | R38 Gain |
R37 Hold |
R36 Hold |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1976
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
D60 Gain |
D59 Gain |
D58 Gain |
D57 Gain |
D56 Gain |
D55 Gain |
D54 Hold |
D53 Hold |
D52 Re-elected | |
D61 Gain |
I1 Re-elected |
R38 Gain |
R37 Gain |
R36 Gain |
R35 Gain |
R34 Gain |
R33 Gain |
R32 Gain |
R31 Hold |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1978
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 | D42 | D43 | D44 | D45 | D46 Ran |
D47 Ran |
D48 Ran |
D49 Ran |
D50 Ran |
Majority → | D51 Ran | ||||||||
I1 | D59 Gain |
D58 Gain |
D57 Gain |
D56 Gain |
D55 Gain |
D54 Hold |
D53 Hold |
D52 Hold | |
R40 Gain |
R39 Gain |
R38 Gain |
R37 Gain |
R36 Gain |
R35 Gain |
R34 Gain |
R33 Hold |
R32 Hold |
R31 Hold |
R21 | R22 Ran |
R23 Ran |
R24 Ran |
R25 Ran |
R26 Ran |
R27 Ran |
R28 Ran |
R29 Ran |
R30 Ran |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1980
[edit]The November 4, 1980 elections coincided with Ronald Reagan's victory in the presidential election. Reagan's large margin of victory over incumbent Jimmy Carter pulled in many Democratic voters and gave a huge boost to Republican Senate candidates.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Hold |
D46 Hold |
I1 | R53 Gain |
R52 Gain |
R51 Gain |
Majority → | |||||||||
R41 Hold |
R42 Gain |
R43 Gain |
R44 Gain |
R45 Gain |
R46 Gain |
R47 Gain |
R48 Gain |
R49 Gain |
R50 Gain |
R40 Hold |
R39 Hold |
R38 Hold |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1982
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 Re-elected |
D28 Re-elected |
D29 Re-elected |
D30 Re-elected |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Gain |
D46 Gain |
R54 Gain |
R53 Gain |
R52 Hold |
R51 Re-elected |
Majority → | |||||||||
R41 | R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Re-elected |
R50 Re-elected |
R40 | R39 | R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1984
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Hold |
D45 Hold |
D46 Gain |
D47 Gain |
R53 Gain |
R52 Hold |
R51 Re-elected |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Re-elected |
R50 Re-elected |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1986
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Hold |
D46 Hold |
D47 Gain |
D48 Gain |
D49 Gain |
D50 Gain |
Majority → | D51 Gain | ||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Hold |
R45 Gain |
D55 Gain |
D54 Gain |
D53 Gain |
D52 Gain | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1988
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
R41 Re-elected |
R42 Re-elected |
R43 Gain |
R44 Gain |
R45 Gain |
D55 Gain |
D54 Gain |
D53 Gain |
D52 Gain | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1990
[edit]The elections were held November 6, 1990. Democrats increased their majority with a net gain of one seat from Republicans. The election took place in the middle of President George H. W. Bush's term, and, as with most other midterm elections, the party not holding the presidency gained seats in Congress. Only one seat changed parties in this election. Democrats would later gain a 57th seat after a Democrat was appointed to replace a Republican who had died.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Re-elected |
Majority → | D51 Re-elected | ||||||||
R41 Re-elected |
R42 Hold |
R43 Hold |
R44 Hold |
D56 Gain |
D55 Re-elected |
D54 Re-elected |
D53 Re-elected |
D52 Re-elected | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1992
[edit]The elections were held November 3, 1992 and coincided with Bill Clinton's victory the presidential election. Despite the presidential victory, Democrats had a net loss of a seat in the general elections, and only managed to break even by winning a seat in a special election.
Democratic victories over Republicans John F. Seymour (of California) and Bob Kasten (of Wisconsin) were cancelled out by the defeats of Democrats Wyche Fowler (of Georgia) and Terry Sanford (of North Carolina). The election of four new Democratic women to the Senate was notable (referred to in the press as the "Year of the Woman"). Due to a special election in California, both of California's Senate seats were up for election in 1992. These seats were won by Dianne Feinstein and Barbara Boxer. As a consequence, California became the first state to have elected women to occupy both of its Senate seats.
Democrat Carol Moseley Braun (of Illinois), became the first African-American woman in the United States Senate.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Hold |
D50 Hold |
Majority → | D51 Hold | ||||||||
R41 Hold |
R42 Hold |
R43 Gain |
D57 Gain |
D56 Gain |
D55 Retired |
D54 Retired |
D53 Hold |
D52 Hold | |
R40 Hold |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1994
[edit]The elections were held November 8, 1994. Republicans were able to take control of the Senate from the Democrats. In a midterm election, the opposition Republicans held the traditional advantage. Congressional Republicans campaigned against the early presidency of Bill Clinton, including his unsuccessful health care plan.[citation needed]
The Republican Party successfully defended all of its seats and captured eight seats from the Democrats, including the seats of sitting Senators in Pennsylvania and Tennessee, as well as six open seats in Arizona, Maine, Michigan, Ohio, Oklahoma, and Tennessee. Notably, Tennessee's Senate delegation switched from entirely Democratic to entirely Republican in a single election. This election marked the first time Republicans controlled the Senate since January 1987, and coincided with the first change of control in the House of Representatives since January 1955 and a Republican net gain of ten governorships. Collectively, these Republican gains are known as the "Republican Revolution." This was also the first time since 1980 that Republicans made net gains in the Senate, but the last time the Republicans also made gains among class 1 senators.
Initially, the balance was 52–48 in favor of the Republicans, but after the power change, two Democrats switched parties, bringing the balance to 54–46.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Ran |
D39 Ran |
D38 Ran |
D37 Ran |
D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
R52 Re-elected |
R51 Re-elected |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Hold |
R45 Gain |
R46 Gain |
R47 Gain |
R48 Gain |
R49 Gain |
R50 Gain |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Hold |
R36 Re-elected |
R35 Hold |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1996
[edit]The election was held November 5, 1996 and coincided with Democrat Bill Clinton's presidential re-election. Despite Clinton's re-election and his party picking up a net two seats in the House elections held the same day, the Republicans had a net gain of two seats in the Senate, following major Republican gains two years previously in the 1994 elections. As such, Clinton became the first president re-elected since Theodore Roosevelt in 1904 to win either of his terms without any Senate coattails. The Republicans captured open seats in Alabama, Arkansas, and Nebraska. In South Dakota, Democrat Tim Johnson narrowly defeated incumbent Republican Larry Pressler. The 1996 election marked the first time since 1980 that the Republican party made gains in the Senate for two consecutive election cycles.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Hold |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 | D31 |
D41 Hold |
D42 Hold |
D43 Hold |
D44 Hold |
D45 Gain |
R55 Gain |
R54 Gain |
R53 Hold |
R52 Hold |
R51 Hold |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Re-elected |
R50 Hold |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
1998
[edit]The November 3, 1998 elections were a roughly even contest between Republicans and Democrats. While the Democrats had to defend more seats up for election, Republican attacks on the morality of President Bill Clinton failed to connect with voters and anticipated Republican gains did not materialize. The Republicans picked up open seats in Ohio and Kentucky and narrowly defeated an incumbent senator in Illinois, but these were offset by the Democrats' gain of an open seat in Indiana and defeats of senators in New York and North Carolina. The balance of the Senate remained unchanged at 55–45 in favor of the Republicans. With Democrats gaining five seats in the House of Representatives, this marked the first time since 1934 that the out-of-Presidency party failed to gain congressional seats in a mid-term election, and the first time since 1822 that the party not in control of the White House failed to gain seats in the mid-term election of a President's second term. These are the last senate elections that resulted in no net change in the balance of power.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 Re-elected |
D28 Re-elected |
D29 Re-elected |
D30 Re-elected |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Gain |
D44 Gain |
D45 Gain |
R55 Gain |
R54 Gain |
R53 Gain |
R52 Re-elected |
R51 Re-elected |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Re-elected |
R50 Re-elected |
R40 | R39 | R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2000
[edit]The November 7, 2000 elections coincided with the presidential election of Republican George W. Bush. It featured a number of fiercely contested elections that resulted in a victory for the Democrats, who gained a net total of four seats from Republicans. This election marked the first election year since 1988 where Democrats made net gains in the Senate.
These elections took place six years after Republicans had won a net gain of eight seats in Senate Class 1 during the elections of 1994. Democrats defeated Republican senators in Delaware, Michigan, Minnesota, Missouri, and Washington, as well as winning an open seat in Florida. In Missouri, the winner was elected posthumously. The Republicans did defeat one incumbent in Virginia and won an open seat in Nevada.
These elections resulted in an equal 50–50 split between Republicans and Democrats, meaning the Vice President would cast the tie-breaking votes in organizing the Senate. This resulted in the Democrats winning control of the Senate for only 17 days, since Al Gore was still Vice President and President of the Senate at the beginning of the new term, on January 3, 2001. But the Republicans regained control of the chamber when the new Vice President Dick Cheney was inaugurated January 20. The Republican majority would last until June 6, 2001 when a Republican Senator became an Independent and caucused with the Democrats.
These are the last elections with only Republicans and Democrats in the Senate. Starting with that Independent's party switch, there would always be at least one third-party senator.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 | D31 |
D41 Re-elected |
D42 Hold |
D43 Hold |
D44 Hold |
D45 Gain |
D46 Gain |
D47 Gain |
D48 Gain |
D49 Gain |
D50 Gain |
Majority with Democratic Vice President→ | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Gain |
R50 Gain |
R40 | R39 | R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2002
[edit]The November 5, 2002 elections were fiercely contested and resulted in a victory for the Republicans, who gained two seats and thus a narrow majority.
The Democrats had originally hoped to do well, as the party holding the presidency historically loses seats in midterm elections, and the Republicans had 20 seats up for election compared to 14 Democratic seats. In addition, four incumbent Republicans and no Democrats announced their retirement before the election. However, the Republicans were able to hold the four open seats, all of which were in the South. Ultimately, Republicans would pick up three seats and lose one, resulting in a net gain of two seats. Together with gains made in the House of Representatives, this election was one of the few mid-term elections in the last one hundred years in which the party in control of the White House gained Congressional seats (the others were 1902, 1934, and 1998). This was the first time since 1962 in which a first-term president's party made net gains in the Senate.
This was the most recent Senate election cycle in which at least one incumbent senator from each party lost in the general election. This was also the second consecutive mid-term election held in a president's first term in which the Republican party both had a net gain of seats and regained control of the United States Senate from the Democratic Party. This was the only election cycle ever where the party of the incumbent President gained new control of a house of Congress in a midterm election.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Hold |
D49 Gain |
I1 |
Majority with Republican Vice President→ | R50 Gain | ||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Hold |
R45 Hold |
R46 Hold |
R47 Hold |
R48 Hold |
R49 Gain | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2004
[edit]The November 2, 2004 coincided with the presidential re-election of George W. Bush and the United States House election. This was the third consecutive election for Senate Class 3 where the Democrats failed to end up with a net gain. This also marked the first time since 1980 in which a presidential candidate from either party won with coattails in the Senate.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 Re-elected |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Gain |
D44 Gain |
I1 | R55 Gain |
R54 Gain |
R53 Gain |
R52 Gain |
R51 Gain |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Hold |
R50 Gain |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2006
[edit]The November 7, 2006 elections were part of the Democratic sweep of the 2006 elections, in which Democrats made numerous gains and no Congressional or gubernatorial seat held by a Democrat was won by a Republican.[1] Six Republican incumbents were defeated by Democrats. An incumbent lost his Democratic primary, but created his own party and won re-election. Democrats kept their two open seats and Republicans held onto their lone open seat. An Independent was elected to replace an Independent.Two new women were elected to seats previously held by men. This brought the total number of female senators to an all-time high of 16. Following the elections, no party held a majority of seats for the first time since January 1955. The Democrats were able to control the chamber because the two Independents caucused with the Democrats. The Democrats needed at least 51 seats to control the Senate because Vice President Dick Cheney would have broken any 50–50 tie in favor of the Republicans.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 Re-elected |
D29 Re-elected |
D30 Re-elected |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D41 Re-elected |
D42 Hold |
D43 Hold |
D44 Gain |
D45 Gain |
D46 Gain |
D47 Gain |
D48 Gain |
D49 Gain |
I2 Re-elected New party |
Majority (with Independents) ↑ | I1 Hold | ||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Hold | |
R40 | R39 | R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2008
[edit]Going into the November 4, 2008 elections, the Senate had 49 Democrats, 49 Republicans, and 2 Independents who caucused with the Democrats, giving the Democratic caucus the slightest 51-49 majority.[2] Of the seats up for election in 2008, 23 were held by Republicans and 12 by Democrats. The Republicans, who openly conceded early on that they wouldn't be able to regain the majority,[3][4] lost eight seats. This election was the second cycle in a row in which no seats switched from Democratic to Republican. In addition, this was the largest Democratic Senate gain since 1986, when they also won eight seats. Finally, these elections marked the first time since 1964 in which a Democratic presidential candidate won the White House with Senate coattails.
When the new senators were first sworn in, the balance was 58–41 in favor of the Democrats, because of the unresolved Senate election in Minnesota. The April 2009 defection of a Republican to the Democratic party and the July 2009 resolution of the Minnesota election in favor of the Democrat increased the Democratic majority to 60–40. Republicans gained a seat in a January 2010 special election in Massachusetts, making the balance 59-41 before the start of the next election cycle.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Gain |
Majority → | D51 Gain | ||||||||
R41 Hold |
I2 | I1 | D57 Gain |
D56 Gain |
D55 Gain |
D54 Gain |
D53 Gain |
D52 Gain | |
R40 Hold |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2010
[edit]The November 2, 2010 elections featured 19 incumbent Democrats (7 of whom retired or were defeated in the primary) and 18 incumbent Republicans (eight of whom retired or were defeated in the primary). Republicans won four seats held by retiring Democrats and Republicans defeated two incumbent Democrats, for a Republican net gain of six seats. This was the largest number of Republican net gains since the 1994 elections and also the first time since that election that Republicans successfully defended all of their own seats. This was the fourth consecutive election of "Class 3" senators where Democrats failed to gain seats and the third consecutive mid-term election held in a president's first term where Republicans picked up seats. Despite Republican gains, the Democrats retained a majority of the Senate with 51 seats plus 2 independents who caucused with them, compared to the 47 Republican seats.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 | D39 | D38 | D37 | D36 | D35 | D34 | D33 | D32 | D31 |
D41 | D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Re-elected |
D48 Re-elected |
D49 Re-elected |
D50 Hold |
Majority → | D51 Ran | ||||||||
R41 Hold |
R42 Gain |
R43 Gain |
R44 Gain |
R45 Gain |
R46 Gain |
R47 Gain |
I2 | I1 | |
R40 Hold |
R39 Hold |
R38 Hold |
R37 Hold |
R36 Hold |
R35 Hold |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 Re-elected |
R24 Re-elected |
R25 Re-elected |
R26 Re-elected |
R27 Re-elected |
R28 Re-elected |
R29 Re-elected |
R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2012
[edit]In the November 6, 2012 elections, Democrats had 21 seats up for election, plus 1 Independent and 1 Independent Democrat (who both caucused with the Democrats), while the Republicans had only 10 seats up for election. The Democrats gained a net of 2 seats including a gain from the Independent Democrat, leaving them with a total of 53 seats. The Republicans lost a net of 2 seats, ending with a total of 45 seats. The Independent retained a lone seat and gained a seat from the Republicans, bringing their total to 2 seats. The Independents would caucus with the Democrats, so that majority caucus had a combined total of 55 seats. This was the third consecutive election of "Class 1" senators where Democrats gained seats. This was the third consecutive Senate election held in a presidential election year where the party belonging to the winning presidential candidate gained seats. This was the first time since 1936 where a Democratic presidential candidate who won a second term also had Senate coattails in both occasions (although Franklin Roosevelt won a third and fourth term in 1940 and 1944 respectively, he lost Senate seats on both occasions). This was the first time since 1964 in which either party had to defend more than two-thirds of the Senate seats up for grabs, but managed to make net gains.[5][6]
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Hold |
D47 Hold |
D48 Hold |
D49 Hold |
D50 Hold |
Majority → | D51 Gain | ||||||||
R41 Re-elected |
R42 Re-elected |
R43 Hold |
R44 Hold |
R45 Gain |
I2 Gain |
I1 Re-elected |
D53 Gain |
D52 Gain | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2014
[edit]D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Hold |
I1 | I2 | R54 Gain |
R53 Gain |
R52 Gain |
R51 Gain |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Hold |
R44 Hold |
R45 Hold |
R46 Gain |
R47 Gain |
R48 Gain |
R49 Gain |
R50 Gain |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2016
[edit]The November 8, 2016 elections were held with the presidential election of Donald Trump. 34 seats were contested. Republicans held the Senate majority with 54 seats before this election. Democrats won a net gain of two seats. Only two incumbents lost their seats and 2016 marked the first time since 1986 that Democrats made a net gain of seats in class 3. This is the first and only election since the passage of the Seventeenth Amendment in 1913 where the winning party in every Senate election mirrored the winning party for their state in the presidential election.[7][8] This election marks the first time since 2000 in which the party in opposition to the elected or re-elected presidential candidate made net gains in the Senate, with both cases being a Republican president and Democratic gains in the Senate. Also in both cases, the president won in the electoral college but lost the popular vote.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Hold |
D43 Hold |
D44 Hold |
D45 Gain |
D46 Gain |
I1 | I2 | R52 Hold |
R51 Hold |
Majority → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Re-elected |
R49 Re-elected |
R50 Re-elected |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2018
[edit]Elections were held November 6, 2018, for all 33 Class 1 seats, along with two special elections for the Class 2 seats of Minnesota and Mississippi. Republicans expanded their majority, defeating four Democratic incumbents in Florida, Indiana, Missouri, and North Dakota. However, Democrats made gains in Arizona and Nevada, and defended competitive seats in states won by Donald Trump in the 2016 presidential election, such as Michigan, Montana, Ohio, and West Virginia, the latter of which was a major upset.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 Re-elected |
D26 Re-elected |
D27 Re-elected |
D28 Re-elected |
D29 Re-elected |
D30 Re-elected |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 Re-elected |
D32 Re-elected |
D31 Re-elected |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Gain |
D45 Gain |
I1 Re-elected |
I2 Re-elected |
R53 Gain |
R52 Gain |
R51 Gain |
Majority → | |||||||||
R41 | R42 | R43 | R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Re-elected |
R48 Hold |
R49 Hold |
R50 Gain |
R40 | R39 | R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2020
[edit]Elections were held November 3, 2020, with the 33 Class 2 seats being contested, along with special elections for the Class 3 seats of Arizona and Georgia. Democrats made gains in Arizona and Colorado, while Republicans flipped the Alabama seat that was lost to them in the 2017 special election. The two concurrent elections in Georgia were left to runoffs due to the state's two-round system, which were held on January 5, 2021. Control of the Senate was not known until these highly competitive elections were held, as neither party had gained a majority of seats after the elections. In the runoffs, Democrats gained both seats and thus narrow control of the Senate due to the election of Vice President Kamala Harris, who has the ability to cast tie-breaking votes.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 Re-elected |
D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Hold |
D45 Gain |
D46 Gain |
D47 Gain |
D48 Gain |
I1 | I2 |
Majority (with independents and vice president)[c] ↑ | |||||||||
R50 Gain | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Re-elected |
R46 Re-elected |
R47 Hold |
R48 Hold |
R49 Hold | |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R30 | R29 | R28 | R27 | R26 | R25 | R24 | R23 | R22 | R21 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2022
[edit]Elections were held on November 8, 2022, with all 34 Class 3 seats up for election, along with a special election for Oklahoma's Class 2 seat. Democrats gained an open seat in Pennsylvania while retaining their 14 seats in this class, while Republicans held their remaining 20 seats. This was the first election since 2012 in which the Senate Democratic Caucus won an outright majority, and the first since 1990 in which only one seat changed party hands.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | D29 | D30 |
D40 Re-elected |
D39 Re-elected |
D38 Re-elected |
D37 Re-elected |
D36 Re-elected |
D35 Re-elected |
D34 | D33 | D32 | D31 |
D41 Re-elected |
D42 Re-elected |
D43 Re-elected |
D44 Re-elected |
D45 Re-elected |
D46 Re-elected |
D47 Elected |
D48 Hold |
D49 Gain |
I1 |
Majority (with independents)[d] → | |||||||||
R41 Re-elected |
R42 Re-elected |
R43 Re-elected |
R44 Re-elected |
R45 Hold |
R46 Hold |
R47 Hold |
R48 Hold |
R49 Hold |
I2 |
R40 Re-elected |
R39 Re-elected |
R38 Re-elected |
R37 Re-elected |
R36 Re-elected |
R35 Re-elected |
R34 Re-elected |
R33 Re-elected |
R32 Re-elected |
R31 Re-elected |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 Re-elected |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
2024
[edit]Elections will be held on November 5, 2024, with all 33 Class 1 seats up for election, along with a special election for Nebraska's Class 2 seat.
D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
D20 | D19 | D18 | D17 | D16 | D15 | D14 | D13 | D12 | D11 |
D21 | D22 | D23 | D24 | D25 | D26 | D27 | D28 | TBD | TBD |
TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
Majority → | |||||||||
TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
TBD | TBD | R38 | R37 | R36 | R35 | R34 | R33 | R32 | R31 |
R21 | R22 | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 |
R20 | R19 | R18 | R17 | R16 | R15 | R14 | R13 | R12 | R11 |
R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 |
See also
[edit]Notes
[edit]- ^ a b c d e f g Appointee elected
- ^ Appointee defeated
- ^ As the two independents senators (Angus King and Bernie Sanders) have caucused with the Democratic Party since joining the Senate, the Democratic caucus consists of 50 seats, which became a working majority once the presidency of Joe Biden began on January 20, with Vice President Kamala Harris casting tie-breaking votes.
- ^ As the two independent senators (Angus King and Bernie Sanders) have caucused with the Democratic Party since joining the Senate, the Democratic caucus consists of 51 seats.
References
[edit]- ^ Don Rose (December 26, 2006). "Democratic sweep may be long-lasting". Chicago Tribune. Retrieved April 9, 2014.
- ^ Sherman, Emily (October 8, 2008). "'Perfect storm' could give Dems 'magic 60' in Senate". CNN. Retrieved November 19, 2008.
- ^ Newton-Small, Jay (October 15, 2007). "The Republicans' Big Senate Fear". TIME. Archived from the original on October 16, 2007.
- ^ Hook, Janet (July 6, 2008). "Senate outlook bad for GOP". Los Angeles Times.
- ^ Weisman, Jonathan (November 6, 2012). "Democrats Keep Control of the Senate". The New York Times.
- ^ Bendavid, Naftali (November 6, 2012). "Democrats Retain Control of U.S. Senate". The Wall Street Journal.
- ^ "WaunaKeegan Results". WaunaKeegan. Archived from the original on March 22, 2017. Retrieved January 13, 2017.
- ^ Enten, Harry (November 10, 2016). "There Were No Purple* States On Tuesday". FiveThirtyEight.