Nonpartisan Analysis Since 1980

Illinois
Senate III

State Map

State map

Current Rating

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Not Up This Cycle

Baseline

What's This?
D +15.5
D: 56.3%, R: 40.8%

Incumbent

Campaign Finance Data

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Past Elections

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Calendar

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NOV
3
2025
Candidate Filing Deadline
MAR
17
2026
Primary Election Day
NOV
3
2026
Election Day

Analysis

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House Report Shorts (Aug. 20, 2026)

August 20, 2026
by Nathan L. Gonzales, Jacob Rubashkin & Inshara Ali

Gubernatorial Overview (June 25, 2026)

June 25, 2026
by Jacob Rubashkin, Nathan L. Gonzales & Inshara Ali

Illinois Primary Results: Democrats Nominate Likely New Members

March 18, 2026
by Jacob Rubashkin

House Overview (March 12, 2026): Alabama – Iowa

March 12, 2026
by Jacob Rubashkin

2026 Senate Overview (Jan. 22, 2026): Alabama – Kansas

January 22, 2026
by Nathan L. Gonzales & Jacob Rubashkin

Ratings

2026
January 6, 2023
Not Up This Cycle
2024
January 6, 2023
Not Up This Cycle
2022
January 8, 2021
Solid Democrat
2018
January 13, 2017
Not Up This Cycle
2016
May 5, 2016
Lean Democrat
May 29, 2015
Tilt Democrat
January 9, 2015
Toss-up
2012
January 1, 2011
Not Up This Cycle
2010
June 24, 2010
Tilt Republican

Baselines

About
2025+15.5D 56.3, R 40.8
2024
+15.5
2022
+15.6
2020
+14.3
2018
+13.9
2016
+9.4
2014
+11.6