1940 Wyoming U.S. Senate Election

Wyoming · 2 candidates · See every 1940 U.S. Senate race

Who won the 1940 Wyoming U.S. Senate Election?

Joseph C. O'Mahoney won the 1940 Wyoming U.S. Senate Election. Joseph C. O'Mahoney received 65,022 popular votes (58.74%). The main challenger was Milward W. Simpson (41.26%).

See the full head-to-head between O'Mahoney and Simpson

O'Mahoney +17.5 pts · won by 19,340 votes
65,022 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.