1970 United States Senate election in Montana

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1970 United States Senate election in Montana

← 1964 November 3, 1970 1976 →
  Michael Joseph Mansfield.jpg No image.png
Nominee Mike Mansfield Harold E. Wallace
Party Democratic Republican
Popular vote 150,060 97,809
Percentage 60.54% 39.46%

Montana Senate Election Results by County, 1970.svg
County results
Mansfield:      50–60%      60–70%      70–80%
Wallace:      50-60%      60-70%

U.S. Senator before election

Mike Mansfield

Elected U.S. Senator

Mike Mansfield

The 1970 United States Senate election in Montana took place on November 3, 1970. Incumbent United States Senator Mike Mansfield, who was first elected to the Senate in 1952 and was re-elected in 1958 and 1964, ran for re-election. Mansfield won the Democratic primary against several opponents, and advanced to the general election, where he was opposed by Harold E. Wallace, a sporting goods salesman and the Republican nominee. While his margin of victory decreased slightly from 1964, Mansfield still managed to defeat Wallace in a landslide, winning his fourth and final term in the Senate.

Democratic primary[edit]



Democratic Party primary results[1]
Party Candidate Votes %
Democratic Mike Mansfield (inc.) 68,146 77.17
Democratic Tom McDonald 10,773 12.20
Democratic John W. Lawlor 19,384 10.63
Total votes 88,303 100.00

Republican primary[edit]


  • Harold E. Wallace, sporting goods salesman


Republican Primary results[1]
Party Candidate Votes %
Republican Harold E. Wallace 45,549 100.00
Total votes 45,549 100.00

General election[edit]


United States Senate election in Montana, 1970[2]
Party Candidate Votes % ±
Democratic Mike Mansfield (inc.) 150,060 60.54% -3.97%
Republican Harold E. Wallace 97,809 39.46% +3.97%
Majority 52,251 21.08% -7.95%
Turnout 247,869
Democratic hold Swing

See also[edit]


  1. ^ a b "Report of the Official Canvass of the Vote Cast at the Primary Election Held in the State of Montana, June 2, 1970". Montana Secretary of State. Retrieved July 4, 2014.
  2. ^ "Statistics of the Congressional Election of November 3, 1970" (PDF). Clerk of the United States House of Representatives. Retrieved July 4, 2014.