PolitiFinder

1918 Illinois U.S. Senate Election

Illinois · 5 candidates · See every 1918 U.S. Senate race

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

Medill McCormick won the 1918 Illinois U.S. Senate Election. Medill McCormick received 479,983 popular votes (50.5%). The main challenger was J. Hamilton Lewis (44.92%).

See the full head-to-head between McCormick and Lewis

McCormick +5.6 pts · won by 53,040 votes
Medill McCormickRepublicanWINNER50.5%
479,983 votes
J. Hamilton LewisDemocratic44.92%
426,943 votes
William B. LloydSocialist3.91%
37,167 votes
John M. FrancisSocialist Labor0.34%
3,268 votes
Frank B. VennumProhibition0.33%
3,151 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.