1918 United States Senate election in South Dakota

← 1913 November 5, 1918 1924 →

Nominee Thomas Sterling Orville V. Rinehart W. T. Rafferty Party Republican Democratic Independent Popular vote 51,198 36,210 5,560 Percentage 55.07% 38.95% 5.98%

County results Sterling:      40–50%      50–60%      60–70%      70–80% Rinehart:      40–50%      50–60%      60–70%      70–80% No Vote:

U.S. senator before election Thomas Sterling Republican Elected U.S. Senator Thomas Sterling Republican

Elections in South Dakota
Federal government Presidential elections 1892 1896 1900 1904 1908 1912 1916 1920 1924 1928 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 2020 2024 Presidential primaries Democratic 2004 2008 2016 2020 Republican 2008 2016 U.S. Senate elections 1889 1891 1894 1897 1901 1903 1903 sp 1907 1909 1913 1914 1918 1920 1924 1926 1930 1932 1936 1938 1938 sp 1942 1944 1948 1950 1954 1956 1960 1962 1966 1968 1972 1974 1978 1980 1984 1986 1990 1992 1996 1998 2002 2004 2008 2010 2014 2016 2020 2022 2026 U.S. House elections 1889 1890 1891 AL sp 1892 1894 1896 1898 1900 1902 1904 1906 1908 AL sp 1910 1912 1914 1916 1918 1920 1922 1924 1926 1928 1930 1932 1934 1936 1938 1940 1942 1944 1946 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 AL sp 2006 2008 2010 2012 2014 2016 2018 2020 2022
State government General elections 2010 2014 2018 2020 2022 Gubernatorial elections 1889 1890 1892 1894 1896 1898 1900 1902 1904 1906 1908 1910 1912 1914 1916 1918 1920 1922 1924 1926 1928 1930 1932 1934 1936 1938 1940 1942 1944 1946 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 2014 2018 2022 Secretary of State elections 2022 Attorney General elections 2018 2022 Senate elections 2020 2022 House of Representatives elections 2020 2022
Ballot measures 2006 Amendment C 2008 Measure 9 Measure 10 2020 Amendment A Measure 26

The 1918 United States Senate election in South Dakota took place on November 5, 1918. Incumbent Republican Senator Thomas Sterling sought re-election in his first popular election. He defeated former Governor Frank M. Byrne in the Republican primary and then faced former State Representative Orville Rinehart, the 1916 Democratic nominee for Governor, in the general election. Sterling defeated Rinehart, along with independent candidate W. T. Rafferty, by a wide margin to win re-election.

Democratic primary[edit]

Candidates[edit]

• Orville V. Rinehart, former State Representative from Pennington County, 1916 Democratic nominee for Governor^[1]
• James Coffey, Internal Revenue Collector for North and South Dakota^[2]
• John E. Kelley, former U.S. Congressman from South Dakota's at-large congressional district^[2]

Results[edit]

Republican primary[edit]

Candidates[edit]

• Thomas Sterling, incumbent U.S. Senator
• Frank M. Byrne, former Governor of South Dakota

Results[edit]

Socialist Primary[edit]

Candidates[edit]

• John C. Knapp

Results[edit]

After winning the primary, Knapp withdrew as a candidate, citing his disagreement with the Socialist Party's anti-war policies.^[4]

General election[edit]

Results[edit]

References[edit]