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1970 Montana U.S. Senate Election

Montana · 2 candidates · See every 1970 U.S. Senate race

Who won the 1970 Montana U.S. Senate Election?

Mike Mansfield won the 1970 Montana U.S. Senate Election. Mike Mansfield received 150,060 popular votes (60.54%). The main challenger was Harold E. Wallace (39.46%).

See the full head-to-head between Mansfield and Wallace

Mansfield +21.1 pts · won by 52,251 votes
Mike MansfieldDemocraticWINNER60.54%
150,060 votes
Harold E. WallaceRepublican39.46%
97,809 votes
Popular-vote totals for this U.S. Senate election come from the Constituency-Level Elections Archive (CLEA) and the official public record.

Data last verified July 28, 2026.