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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/1920/US Senate/Illinois
      1920·US Senate·Illinois

      Illinois US Senate

      Winner
      REP
      William B. McKinley
      66.8%1,381,382 votes
      Runner-up
      DEM
      Peter A. Waller
      26.8%554,372 votes
      Margin
      R+40.0
      2,067,043 total votes
      3 candidates2,067,043 total votes
      CandidatePartyVotes ▼%Vote Share
      William B. McKinleyREP✓
      		REP1,381,38266.8%
      Peter A. WallerDEM
      		DEM554,37226.8%
      OtherOTH
      		OTH131,2896.3%

      Seat History

      US Senate in Illinois(Class I)

      2022
      Tammy DuckworthDEM
      D+15.3
      2020
      Richard J DurbinDEM
      D+16.1
      2016
      Tammy DuckworthDEM
      D+15.1
      2014
      Richard J DurbinDEM
      D+10.8
      2010
      Mark Steven KirkREP
      R+1.6
      2008
      Richard J DurbinDEM
      D+39.3
      2004
      Barack ObamaDEM
      D+42.9
      2002
      Richard J DurbinDEM
      D+22.3
      1998
      Peter G FitzgeraldREP
      R+2.9
      1996
      Richard J DurbinDEM
      D+15.4
      1992
      Carol Moseley-BraunDEM
      D+10.2
      1990
      Paul SimonDEM
      D+30.1
      1986
      Alan J. DixonDEM
      D+31.4
      1984
      Paul SimonDEM
      D+1.9
      1980
      Alan J. DixonDEM
      D+13.5
      View all US Senate history for Illinois →

      Candidates

      Peter A. WallerDEM
      Record0W-1L
      Avg MarginR+40.0
      Career1920-1920
      US Senate
      Full profile →
      William B. McKinleyREP
      Record1W-0L
      Avg MarginR+40.0
      Career1920-1920
      US Senate
      Full profile →

      Also in Illinois, 1920

      President1 contest →Governor1 contest →
      ← All 1920 US Senate races1920 overviewIllinois profileAll elections