Nonpartisan Analysis Since 1980

Illinois
Senate

State Map

State map

Current Rating

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Solid D

2025 Baseline

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

2026 Election

Class II

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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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Illinois Primary Results: Democrats Nominate Likely New Members

March 18, 2026
by Jacob Rubashkin

2026 Senate Overview

January 22, 2026
by Nathan Gonzales & Jacob Rubashkin

2026 Senate Overview (Oct. 23, 2025): Alabama – Kansas

October 23, 2025
by Jacob Rubashkin

2026 Senate Overview (July 24, 2025): Alabama – Kansas

July 24, 2025
by Jacob Rubashkin

Illinois Senate: Race of Three, Who Will It Be?

June 20, 2025
by Jacob Rubashkin

Report Shorts (May 1, 2025)

May 1, 2025
by Jacob Rubashkin

Illinois Senate: Durbin’s Retirement Sets Up Crowded Democratic Primary

April 23, 2025
by Jacob Rubashkin

2026 Senate Overview (April 17, 2025): Alabama – Kansas

April 17, 2025
by Jacob Rubashkin

Report Shorts (March 20, 2025)

March 20, 2025
by Jacob Rubashkin

2026 Senate Overview (Jan. 9, 2025): Alabama – Kansas

January 9, 2025
by Jacob Rubashkin

Ratings

2026
April 23, 2025
Solid Democrat
January 9, 2025
Solid Democrat
January 6, 2023
Not Up This Cycle
2024
January 6, 2023
Not Up This Cycle
2022
January 8, 2021
Not Up This Cycle
January 8, 2021
Solid Democrat
2020
December 15, 2020
Solid Democrat
January 4, 2019
Solid Democrat
2018
January 13, 2017
Not Up This Cycle
2016
May 5, 2016
Lean Democrat
May 29, 2015
Tilt Democrat
January 9, 2015
Not Up This Cycle
January 9, 2015
Toss-up
2014
January 25, 2013
Solid Democrat
2012
January 1, 2011
Not Up This Cycle
2010
June 24, 2010
Not Up This Cycle
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