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Illinois 2026 election odds on Polymarket

Updated September 24, 2026 at 17:34 UTC · refreshed twice a day · Election Day is November 3, 2026

Polymarket odds for Illinois in the 2026 midterms. Illinois's Senate race: Juliana Stratton (Democrat) leads at 97.8% (Safe Democrat). Illinois's governor race: JB Pritzker (Democrat) leads at 97.7% (Safe Democrat). House: Democrats favoured in 14 and Republicans in 3 of 17 districts with a market.

RaceDemocratRepublicanRatingVolume
SenateJuliana Stratton 97.8%Don Tracy 2.5%Safe Democrat$33.5Krace page
GovernorJB Pritzker 97.7%Darren Bailey 1.4%Safe Democrat$11.7Krace page
House IL-01Jonathan Jackson 95.3%Christian Maxwell 4.0%Safe Democrat$54.8Krace page
House IL-02Donna Miller 97.1%Michael Noack 1.1%Safe Democrat$33.7Krace page
House IL-03Delia Ramirez 96.5%Angel Oakley 1.9%Safe Democrat$51.4Krace page
House IL-04Patty Garcia 96.7%Lupe Castillo 3.7%Safe Democrat$61.7Krace page
House IL-05Mike Quigley 95%Tommy Hanson 4.5%Safe Democrat$25.3Krace page
House IL-06Sean Casten 96%Niki Conforti 2.5%Safe Democrat$43.2Krace page
House IL-07La Shawn Ford 96.7%Chad Koppie 1.1%Safe Democrat$26.7Krace page
House IL-08Melissa Bean 93.5%Jennifer Davis 5.5%Likely Democrat$22.1Krace page
House IL-09Daniel Biss 95.5%John Elleson 4.5%Safe Democrat$31.8Krace page
House IL-10Brad Schneider 96.1%Carl Lambrecht 1.1%Safe Democrat$32.8Krace page
House IL-11Bill Foster 95%Jeff Walter 4.5%Safe Democrat$40.0Krace page
House IL-12Julie Fortier 3.5%Mike Bost 97.4%Safe Republican$25.2Krace page
House IL-13Nikki Budzinski 94.5%Jeff Wilson 4.5%Likely Democrat$18.3Krace page
House IL-14Lauren Underwood 94.9%James Marter 4.6%Likely Democrat$16.9Krace page
House IL-15Jennifer Todd 3.9%Mary Miller 96%Safe Republican$44.2Krace page
House IL-16Paul Nolley 5.5%Darin LaHood 94.5%Likely Republican$44.5Krace page
House IL-17Eric Sorensen 93.5%Dillan Vancil 6.1%Likely Democrat$18.7Krace page

Same races on Kalshi: Senate: Democrat 98.6% / Republican 2.2% · Governor: Democrat 97.4% / Republican 2.6% (midpoint of bid and ask).

Ratings from the favourite's price: safe 95%+, likely 80–95%, lean 60–80%, toss-up below 60%. Prices are Polymarket share prices read as probabilities, not polls. Educational information, not betting advice.

National picture: 2026 midterm forecast · Senate forecast · House forecast · Governor forecast

Frequently asked questions

Who is favoured in Illinois's 2026 elections?

Polymarket odds for Illinois in the 2026 midterms. Illinois's Senate race: Juliana Stratton (Democrat) leads at 97.8% (Safe Democrat). Illinois's governor race: JB Pritzker (Democrat) leads at 97.7% (Safe Democrat). House: Democrats favoured in 14 and Republicans in 3 of 17 districts with a market.

How are the ratings set?

From the favourite's price in each race's Polymarket winner market: 95% or more is safe, 80–95% likely, 60–80% lean and below 60% a toss-up. Market prices, not polls.

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