2018 United States Senate election in Montana

2018 United States Senate election in Montana

← 2012 November 6, 2018 2024 →
Turnout	71.53% (of registered voters)[1]
Nominee Jon Tester Matt Rosendale Party Democratic Republican Popular vote 253,876 235,963 Percentage 50.33% 46.78%
County results Precinct results Tester:      40–50%      50–60%      60–70%      70–80%      80–90%      >90% Rosendale:      40–50%      50–60%      60–70%      70–80%      80–90%      >90%
U.S. senator before election Jon Tester Democratic Elected U.S. Senator Jon Tester Democratic

Elections in Montana
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 2000 2004 2008 2016 2020 Republican 2008 2012 2016 2020 2024 U.S. Senate elections 1890 1895 1895 sp 1899 1901 1901 sp 1905 1907 1911 1913 1916 1918 1922 1924 1928 1930 1934 1934 sp 1936 1940 1942 1946 1948 1952 1954 1958 1960 1964 1966 1970 1972 1976 1978 1982 1984 1988 1990 1994 1996 2000 2002 2006 2008 2012 2014 2018 2020 2024 2026 U.S. House of Representatives 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 1945 2nd sp 1946 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1969 2nd sp 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2017 AL sp 2018 2020 2022 2024
State government General elections 2010 2016 2018 2020 2022 Gubernatorial elections 1889 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 Secretary of State elections 2020 2024 Attorney General elections 2020 2024 State Auditor elections 2024 Senate elections 2016 2018 2020 2022 House of Representatives elections 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022
Ballot measures 1894 Capital referendum 2004 Initiative 96 2012 Referendum 121 2016 Initiative 182 2020 Initiative 190
v t e

The 2018 United States Senate election in Montana was held on November 6, 2018, to elect a member of the United States Senate to represent the State of Montana, concurrently with other elections to the United States Senate, elections to the United States House of Representatives and various state and local elections.

This was one of ten Democratic-held Senate seats up for election in a state that Donald Trump won in the 2016 presidential election. Incumbent Democratic Senator Jon Tester was reelected to a third term, defeating Republican State Auditor Matt Rosendale. Rosendale conceded on November 7, 2018.^[2] This was the first Senate election in which Tester received a majority of votes cast rather than a simple plurality.

Following his loss, Rosendale went on to run for Montana’s vacant congressional seat in 2020 and won, taking office in the U.S. House of Representatives in January 2021.