1920 United States Senate election in Illinois

1920 United States Senate election in Illinois

November 2, 1920
 
Nominee William B. McKinley Peter A. Waller
Party Republican Democratic
Popular vote 1,381,384 554,372
Percentage 66.83% 26.82%

Results by county
McKinley:      40–50%      50–60%      60–70%      70–80%      80–90%
Waller:      40–50%      50–60%

U.S. senator before election

Lawrence Yates Sherman
Republican

Elected U.S. senator

William B. McKinley
Republican

The 1920 United States Senate election in Illinois took place on November 2, 1920.

Incumbent Republican senator Lawrence Yates Sherman opted to retire rather than seeking reelection. Fellow Republican William B. McKinley was elected to succeed him in office.