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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2024/US House/Illinois/IL-12
      2024·US House·Illinois·District profile →

      Illinois District 12 US House

      Winner
      REP
      Mike Bost
      74.2%272,754 votes
      Runner-up
      DEM
      Brian Roberts
      25.8%94,875 votes
      Margin
      R+48.4
      367,629 total votes
      2 candidates367,629 total votes
      CandidatePartyVotes ▼%Vote Share
      Mike BostREP✓
      		REP272,75474.2%
      Brian RobertsDEM
      		DEM94,87525.8%

      Presidential Vote by District

      5 elections · 2008–2024 · 118th Congress boundaries
      Latest (2024)R+43.5
      Shift vs 2020↓ R+0.7
      R+40R+20EvenD+20D+4020082012201620202024
      YearDem %Rep %MarginTurnout
      202427.5%71.0%R+43.5372,701
      202027.7%70.5%R+42.8383,257
      201626.0%68.5%R+42.6366,997
      201236.8%63.2%R+26.3339,881
      200843.7%53.7%R+10.0368,836

      Seat History

      US House in Illinois

      2022
      Mike BostREP
      R+50.0
      Redistricted
      2020
      Mike BostREP
      R+20.9
      2018
      Mike BostREP
      R+6.2
      2016
      Mike BostREP
      R+14.6
      2014
      Mike BostREP
      R+10.6
      2012
      William L EnyartDEM
      D+8.9
      Redistricted
      2010
      Jerry F CostelloDEM
      D+23.3
      2008
      Jerry F CostelloDEM
      D+46.5
      2006
      Jerry F CostelloDEM
      D+100.0
      2004
      Jerry F CostelloDEM
      D+40.6
      2002
      Jerry F CostelloDEM
      D+38.5
      Redistricted
      2000
      Jerry F CostelloDEM
      D+100.0
      1998
      Jerry F CostelloDEM
      D+20.7
      1996
      Jerry F CostelloDEM
      D+45.0
      View all US House history for Illinois →

      Candidates

      Mike BostREP
      Record16W-1L
      Avg MarginR+33.8
      Career1992-2024
      US House / State House
      Full profile →
      Brian RobertsDEM
      Record0W-1L
      Avg Margin---
      Career2024-2024
      US House
      Full profile →

      Also in Illinois, 2024

      President1 contest →
      ← All 2024 US House races2024 overviewIllinois profileAll elections