The 1918 United States Senate election in Kansas was held on November 5, 1918. Incumbent Democratic Senator William H. Thompson ran for re-election to a second term in the first popular election for this seat after the ratification of the Seventeenth Amendment. Thompson was challenged by Governor Arthur Capper, the Republican nominee. Amid a nationwide Republican wave, Thompson lost to Capper in a landslide, winning just 34% of the vote to Capper's 64%.
Democratic primary Candidates William H. Thompson, incumbent U.S. Senator George W. Marble, publisher of the Fort Scott Tribune-Monitor
Results
Republican primary Candidates Arthur Capper, Governor of Kansas Walter R. Stubbs, former Governor of Kansas Charles F. Scott, U.S. Representative from Joseph L. Bristow, former U.S. Senator
Results
Socialist primary Candidates Eva Harding, physician
Results
General election Results
See also 1918 United States Senate elections
References