1918 Montana U.S. Senate Election

Montana · 3 candidates · See every 1918 U.S. Senate race

Who won the 1918 Montana U.S. Senate Election?

Thomas J. Walsh won the 1918 Montana U.S. Senate Election. Thomas J. Walsh received 46,160 popular votes (41.07%). The main challenger was Oscar M. Lanstrum (35.79%).

See the full head-to-head between Walsh and Lanstrum

Walsh +5.3 pts · won by 5,931 votes

Thomas J. Walsh DemocraticWINNER41.07%

46,160 votes

Oscar M. Lanstrum Republican35.79%

40,229 votes

Wellington D. RankinNational23.14%

26,013 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.