Member/Delegate |
Years |
Party |
District |
Notes |
LeRoy H. Anderson |
January 3, 1957 – January 3, 1961 |
Democratic |
2nd |
Elected in 1956.
Re-elected in 1958.
Retired to run for U.S. senator. |
Roy E. Ayers |
March 4, 1933 – January 3, 1937 |
Democratic |
2nd |
Elected in 1932.
Re-elected in 1934.
Retired to run for Governor of Montana. |
James F. Battin |
January 3, 1961 – February 27, 1969 |
Republican |
2nd |
Elected in 1960.
Re-elected in 1962.
Re-elected in 1964.
Re-elected in 1966.
Re-elected in 1968.
Resigned to become judge of the U.S. District Court of Montana. |
Max Baucus |
January 3, 1975 – December 14, 1978 |
Democratic |
1st |
Elected in 1974.
Re-elected in 1976.
Retired to run for U.S. senator and resigned when appointed to that seat. |
Albert J. Campbell |
March 4, 1899 – March 3, 1901 |
Democratic |
At-large |
Elected in 1898.
Retired. |
Thomas Henry Carter |
March 4, 1889 – November 8, 1889 |
Republican |
Territory |
Elected in 1888.
Position eliminated upon statehood. |
November 8, 1889 – March 3, 1891 |
At-large |
Elected in 1889.
Lost re-election to W.W. Dixon. |
James M. Cavanaugh |
March 4, 1867 – March 3, 1871 |
Democratic |
Territory |
Elected in 1866.
Re-elected in 1868.
Lost renomination to Edwin W. Toole. |
William H. Clagett |
March 4, 1871 – March 3, 1873 |
Republican |
Territory |
Elected in 1871.
Lost re-election to Maginnis. |
Wesley A. D'Ewart |
June 5, 1945 – January 3, 1955 |
Republican |
2nd |
Elected to finish O'Connor's term.
Re-elected in 1946.
Re-elected in 1948.
Re-elected in 1950.
Re-elected in 1952.
Retired to run for U.S. senator. |
Steve Daines |
January 3, 2013 – January 3, 2015 |
Republican |
At-large |
Elected in 2012.
Retired to run for U.S. Senate. |
Joseph M. Dixon |
March 4, 1903 – March 3, 1907 |
Republican |
At-large |
Elected in 1902.
Re-elected in 1904.
Retired to run for U.S. Senate. |
William W. Dixon |
March 4, 1891 – March 3, 1893 |
Democratic |
At-large |
Elected in 1890.
Lost re-election to Hartman. |
Caldwell Edwards |
March 4, 1901 – March 3, 1903 |
Populist |
At-large |
Elected in 1900.
Retired. |
John M. Evans |
March 4, 1913 – March 3, 1919 |
Democratic |
At-large |
Elected in 1912.
Re-elected in 1914.
Re-elected in 1916.
Redistricted to the C. |
March 4, 1919 – March 3, 1921 |
1st |
Redistricted from the C and re-elected in 1918.
Lost re-election to McCormick. |
March 4, 1923 – March 3, 1933 |
Elected in 1922.
Re-elected in 1924.
Re-elected in 1926.
Re-elected in 1928.
Re-elected in 1930.
Lost renomination to Monaghan. |
Orvin B. Fjare |
January 3, 1955 – January 3, 1957 |
Republican |
2nd |
Elected in 1954.
Lost re-election to Anderson. |
Greg Gianforte |
May 25, 2017 – January 3, 2021 |
Republican |
At-large |
Elected to finish Zinke's term.
Re-elected in 2018.
Retired to successfully run for Governor of Montana. |
Charles S. Hartman |
March 4, 1893 – March 3, 1897 |
Republican |
At-large |
Elected in 1892.
Re-elected in 1894. |
March 4, 1897 – March 3, 1899 |
Silver Republican |
Re-elected in 1896 as a Silver Republican.
Retired. |
Rick Hill |
January 3, 1997 – January 3, 2001 |
Republican |
At-large |
Elected in 1996.
Re-elected in 1998.
Retired. |
Scott Leavitt |
March 4, 1923 – March 3, 1933 |
Republican |
2nd |
Elected in 1922.
Re-elected in 1924.
Re-elected in 1926.
Re-elected in 1928.
Re-elected in 1930.
Lost re-election to Ayers. |
Martin Maginnis |
March 4, 1873 – March 3, 1885 |
Democratic |
Territory |
Elected in 1872.
Re-elected in 1874.
Re-elected in 1876.
Re-elected in 1878.
Re-elected in 1880.
Re-elected in 1882.
Retired. |
Mike Mansfield |
January 3, 1943 – January 3, 1953 |
Democratic |
1st |
Elected in 1942.
Re-elected in 1944.
Re-elected in 1946.
Re-elected in 1948.
Re-elected in 1950.
Retired to run for U.S. senator. |
Ron Marlenee |
January 3, 1977 – January 3, 1993 |
Republican |
2nd |
Elected in 1976.
Re-elected in 1978.
Re-elected in 1980.
Re-elected in 1982.
Re-elected in 1984.
Re-elected in 1986.
Re-elected in 1988.
Re-elected in 1990.
Redistricted to the C and lost re-election to Williams. |
Washington J. McCormick |
March 4, 1921 – March 3, 1923 |
Republican |
1st |
Elected in 1920.
Lost re-election to Evans. |
Samuel McLean |
January 6, 1865 – March 3, 1867 |
Democratic |
Territory |
Elected in 1864.
Re-elected in 1865.
Retired. |
John Melcher |
June 24, 1969 – January 3, 1977 |
Democratic |
2nd |
Elected to finish Battin's term.
Re-elected in 1970.
Re-elected in 1972.
Re-elected in 1974.
Retired to run for U.S. senator. |
Lee Metcalf |
January 3, 1953 – January 3, 1961 |
Democratic |
1st |
Elected in 1952.
Re-elected in 1954.
Re-elected in 1956.
Re-elected in 1958.
Retired to run for U.S. senator. |
Joseph P. Monaghan |
March 4, 1933 – January 3, 1937 |
Democratic |
1st |
Elected in 1932.
Re-elected in 1934.
Retired to run for U.S. senator. |
Jerry J. O'Connell |
January 3, 1937 – January 3, 1939 |
Democratic |
1st |
Elected in 1936.
Lost re-election to Thorkelson. |
James F. O'Connor |
January 3, 1937 – January 15, 1945 |
Democratic |
2nd |
Elected in 1936.
Re-elected in 1938.
Re-elected in 1940.
Re-elected in 1942.
Re-elected in 1944.
Died. |
Arnold Olsen |
January 3, 1961 – January 3, 1971 |
Democratic |
1st |
Elected in 1960.
Re-elected in 1962.
Re-elected in 1964.
Re-elected in 1966.
Re-elected in 1968.
Lost re-election to Shoup. |
Charles Nelson Pray |
March 4, 1907 – March 3, 1913 |
Republican |
At-large |
Elected in 1906.
Re-elected in 1908.
Re-elected in 1910.
Lost re-election to Evans. |
Jeannette Rankin |
March 4, 1917 – March 3, 1919 |
Republican |
At-large |
Elected in 1916.
Retired to run for U.S. Senator. |
January 3, 1941 – January 3, 1943 |
1st |
Elected in 1940.
Retired. |
Dennis Rehberg |
January 3, 2001 – January 3, 2013 |
Republican |
At-large |
Elected in 2000.
Re-elected in 2002.
Re-elected in 2004.
Re-elected in 2006.
Re-elected in 2008.
Re-elected in 2010.
Retired to run for U.S. Senator. |
Carl W. Riddick |
March 4, 1919 – March 3, 1923 |
Republican |
2nd |
Elected in 1918.
Re-elected in 1920.
Retired to run for U.S. senator. |
Matt Rosendale |
January 3, 2021 – present |
Republican |
At-large |
Elected in 2020. |
Richard G. Shoup |
January 3, 1971 – January 3, 1975 |
Republican |
1st |
Elected in 1970.
Re-elected in 1972.
Lost re-election to Baucus. |
Tom Stout |
March 4, 1913 – March 3, 1917 |
Democratic |
At-large |
Elected in 1912.
Re-elected in 1914.
Retired. |
Jacob Thorkelson |
January 3, 1939 – January 3, 1941 |
Republican |
1st |
Elected in 1938.
Lost renomination to Rankin. |
Joseph Toole |
March 4, 1885 – March 3, 1889 |
Democratic |
Territory |
Elected in 1884.
Re-elected in 1886.
Retired. |
Pat Williams |
January 3, 1979 – January 3, 1993 |
Democratic |
1st |
Elected in 1978.
Re-elected in 1980.
Re-elected in 1982.
Re-elected in 1984.
Re-elected in 1986.
Re-elected in 1988.
Re-elected in 1990.
Redistricted to the at-large seat. |
January 3, 1993 – January 3, 1997 |
At-large |
Redistricted from the C.
and Re-elected in 1992.
Re-elected in 1994.
Retired. |
Ryan Zinke |
January 3, 2015 – March 1, 2017 |
Republican |
At-large |
Elected in 2014.
Re-elected in 2016.
Resigned to become U.S. Secretary of the Interior. |