The 1964 United States Senate elections were held on November 3. The 33 seats of Class 1 were contested in regular elections. Special elections were also held to fill vacancies. They coincided with the election of President Lyndon B. Johnson by an overwhelming majority, to a full term. His Democratic Party picked up a net two seats from the Republicans. As of 2023, this was the last time either party has had a two-thirds majority in the Senate, which allowed the Senate Democrats to override a veto, propose constitutional amendments, or convict and expel certain officials without any votes from Senate Republicans. However, internal divisions would have prevented the Democrats from having done so. The Senate election cycle coincided with Democratic gains in the House in the same year.
Roy Elmer Ayers was a U.S. Democratic politician. He served as a member of the United States House of Representatives and as the 11th Governor of Montana. He was the first governor of Montana to be born in what would become the state of Montana.
Scott Leavitt was a U.S. Representative from Montana. He served as chairman of the House Committee on Indian Affairs.
The 1924 United States Senate election in Montana took place on November 4, 1924. Incumbent United States Senator Thomas J. Walsh, who was first elected to the Senate in 1912 by the state legislature, and re-elected in 1918 by popular vote, ran for re-election. He was unopposed in the Democratic primary.
The 1934 United States Senate special election in Montana took place on November 6, 1934. Incumbent United States Senator John E. Erickson, who, as governor, had appointed himself to the seat in 1933 upon the death of Thomas J. Walsh, ran for re-election. However, he was defeated in the Democratic primary by James E. Murray, who was the former Silver Bow County Attorney and the Chairman of the State Advisory Board of the Public Works Administration. In the general election, Murray defeated Scott Leavitt, a former United States Congressman who had represented Montana's 2nd congressional district, and an independent candidate in a landslide to win his first term in the Senate.
The 1942 United States Senate election in Montana took place on November 3, 1942. Incumbent United States Senator James E. Murray, who was first elected to the Senate in a special election in 1934 and was re-elected in 1936, ran for re-election. Following his victory in a competitive Democratic primary, Murray advanced to the general election, where he was opposed by former United States Attorney for the District of Montana Wellington D. Rankin, the Republican nominee and brother of representative Jeannette Rankin. In a closely fought election, Murray narrowly defeated Rankin to win re-election to his third term and his second full term in the Senate.
The 1948 United States Senate election in Montana took place on November 2, 1948. Incumbent United States Senator James E. Murray, who was first elected to the Senate in a special election in 1934 and was re-elected in 1936 and 1942, ran for re-election. After winning the Democratic primary, he faced Tom J. Davis, an attorney and the Republican nominee, in the general election. Following a narrow re-election in 1936, Murray significantly expanded his margin of victory and comfortably won re-election over Davis, resulting in him winning his fourth term and his third full term in the Senate.
The 1922 United States Senate election in Montana took place on November 7, 1922. Incumbent United States Senator Henry L. Myers, who was first elected to the Senate in 1910, and was re-elected in 1916, declined to seek re-election. Former United States Attorney Burton K. Wheeler won the Democratic primary and advanced to the general election, where he faced Carl W. Riddick, the United States Congressman from Montana's 2nd congressional district and the Republican nominee. Ultimately, Wheeler defeated Riddick comfortably and won his first term in the Senate.
The 1934 United States Senate election in Montana took place on November 6, 1934. Incumbent United States Senator Burton K. Wheeler, who was first elected to the Senate in 1922, and was re-elected in 1928, ran for re-election. After easily winning the Democratic primary, Wheeler moved on to the general election, where he faced George M. Bourquin, a former United States Federal Judge and the Republican nominee. In a stark contrast to his close campaign in 1928, Wheeler won re-election to his third Senate term in a landslide.
The 1940 United States Senate election in Montana took place on November 5, 1940. Incumbent United States Senator Burton K. Wheeler, who was first elected to the Senate in 1922, and was re-elected in 1928 and 1934, ran for re-election. Though he faced a serious challenger in the Democratic primary, he emerged victorious, and advanced to the general election, where he faced E. K. Cheadle, a state district judge and the Republican nominee. Just like in 1934, Wheeler won re-election in a landslide, winning his fourth term in the Senate.
The 1976 Montana gubernatorial election took place on November 2, 1976. Incumbent Governor of Montana Thomas Lee Judge, who was first elected in 1972, ran for re-election. He won the Democratic primary unopposed, and moved on to the general election, where he was opposed by Bob Woodahl, the Attorney General of Montana and the Republican nominee. Ultimately, Judge defeated Woodahl by a landslide to win his second and final term as governor.
The 1968 Montana gubernatorial election took place on November 5, 1968. Incumbent Governor of Montana Tim Babcock, who became Governor upon the death of previous Governor Donald Grant Nutter and was elected in 1964, ran for re-election. He faced serious competition in the Republican primary from his Lieutenant Governor, but managed to comfortably win renomination. Advancing to the general election, Babcock faced Forrest H. Anderson, the Attorney General of Montana and the Democratic nominee, and independent candidate Wayne Montgomery of the New Reform Party. Ultimately, Anderson managed to defeat Babcock by a solid margin, winning his first and only term as governor. As of 2023, this is the last time an incumbent Governor of Montana lost re-election.
The 1956 Montana gubernatorial election took place on November 6, 1956. Incumbent governor of Montana J. Hugo Aronson, who was first elected Governor in 1952, ran for re-election. He was unopposed in the Republican primary and advanced to the general election, where he faced Arnold Olsen, the Attorney General of Montana and the Democratic nominee. Despite the fact that then-President Dwight D. Eisenhower won the state in a landslide that year in the presidential election, Aronson only narrowly defeated Arnold to win his second and final term as governor.
The 1948 Montana gubernatorial election took place on November 2, 1948. Incumbent Governor of Montana Sam C. Ford, who was first elected Governor in 1940 and was re-elected in 1944, ran for re-election. He won the Republican primary and advanced to the general election, where he faced John W. Bonner, the former Attorney General of Montana and the Democratic nominee. Ultimately, Bonner defeated Ford handily in his bid for re-election, winning his first and only term as governor.
The 1944 Montana gubernatorial election took place on November 7, 1944. Incumbent Governor of Montana Sam C. Ford, who was first elected Governor in 1940, ran for re-election. He won the Republican primary and moved on to the general election, where he was opposed by Leif Erickson, a former Chief Justice of the Montana Supreme Court and the Democratic nominee. Although then-President Franklin D. Roosevelt comfortably won the state in that year's presidential election, Ford defeated Erickson by a wide margin to win his second and final term as governor. This election is the first time that an incumbent Republican Governor of Montana was re-elected or won re-election.
The 1940 Montana gubernatorial election took place on November 5, 1940. Incumbent Governor of Montana Roy E. Ayers, who was first elected governor in 1936, ran for re-election. He narrowly won the Democratic primary by just over a thousand votes to win renomination, and advanced to the general election, where he was opposed by Sam C. Ford, a former Associate Justice of the Montana Supreme Court and the Republican nominee. Ultimately, in spite of the fact that then-President Franklin D. Roosevelt comfortably won the state in that year's presidential election, Ford narrowly defeated Ayers to win his first of two terms as governor.
The 1936 Montana gubernatorial election took place on November 3, 1936. Incumbent Governor of Montana Elmer Holt, who became governor in 1935 upon the death of Frank Henry Cooney, ran for re-election. He was challenged in the Democratic primary by a number of challengers, and was narrowly defeated for renomination by United States Congressman Roy E. Ayers of Montana's 2nd congressional district. Ayers advanced to the general election, where he faced Frank A. Hazelbaker, the former Lieutenant Governor of Montana and the Republican nominee. Following a close election, Ayers narrowly defeated Hazelbaker to win what would be his first and only term as governor.
The 1932 Montana gubernatorial election took place on November 8, 1932. Incumbent Governor of Montana John E. Erickson, who was first elected governor in 1924 and was re-elected in 1928, ran for re-election. He won the Democratic primary with a plurality and advanced to the general election, where he faced Frank A. Hazelbaker, the Lieutenant Governor of Montana. Despite the fact that Franklin D. Roosevelt carried the state in a landslide in the presidential election that year, Erickson only narrowly defeated Hazelbaker to win re-election to his third and final term as governor, though he would later resign just a few months into his term to appoint himself to the United States Senate.
The 1924 Montana gubernatorial election took place on November 4, 1924. Incumbent Governor of Montana Joseph M. Dixon, who was first elected governor in 1920, ran for re-election. Dixon won a competitive Republican primary, and moved on to the general election, where he faced John E. Erickson, a former district court judge and the Democratic nominee; and Frank J. Edwards, the 1916 Republican nominee for governor and the Farmer–Labor Party nominee. Ultimately, Erickson managed to defeat Dixon in his bid for re-election, winning what would be the first of three terms as governor.
The 1916 Montana gubernatorial election took place on November 7, 1916. Incumbent Governor of Montana Sam V. Stewart, who was first elected governor in 1912, ran for re-election. After comfortably winning the Democratic primary, he advanced to the general election, where he faced Frank J. Edwards, the former Mayor of Helena, who narrowly emerged victorious in a close Republican primary. Benefitting from then-President Woodrow Wilson's landslide victory in Montana in the presidential election that year, Stewart narrowly won re-election to his second and final term as governor.
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