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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2026/US Senate/Illinois
      2026 ForecastSafe D
      2026·US Senate·Illinois

      Illinois US Senate

      Open Seat

      Dick Durbin (D) retiring

      Senate Class 2

      Race Analysis

      Analysis coming soon.

      Updated 2026-02-18

      Candidates & Primaries

      Democratic Candidates

      TBDDDeclared

      Durbin retiring; Dem primary ongoing

      Democratic PrimaryPolymarket

      Will Anthony Williams be the Democratic nominee for Senate in Illinois?

      Data from Polymarket prediction markets

      Republican Candidates

      TBDRRumored

      No major GOP challenger expected

      Republican PrimaryPolymarket

      Will Don Tracy be the Republican nominee for Senate in Illinois?

      Data from Polymarket prediction markets

      State Demographics

      Illinois vs. National · Pop. 12.7M

      White (non-Hispanic)58.1%
      National: 57.4%
      Black13.6%
      National: 12.2%
      Hispanic/Latino18.8%
      National: 19.3%
      Asian6.0%
      National: 6.0%
      College Degree37.9%
      National: 35.6%
      Median Income$84,845
      National: $83,960
      Median Age39.1
      National: 39.1

      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 →

      Also in Illinois, 2026

      Governor
      Safe D      ← 2026 Forecast Overview
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