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1958 Montana U.S. Senate Election
Montana · 2 candidates
Mansfield +52.4 pts · won by 120,337 votes
Mike MansfieldDemocraticWINNER76.22%
174,910 votes
Lou WelchRepublican23.78%
54,573 votes
Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).