JB Pritzker is heavily favored to win Illinois
Governor polls
Each dot is a poll after adjustment; grey ticks show where it was as publishedDot size shows the weight a poll gets. The line is the model's polling average, with its 80% band. The bar at right is the 80% range of the forecast on election day.
Range of outcomes
Democratic margin across simulationsJB Pritzker wins in >99% of simulations (about 1 in 370 for the underdog). Median margin D+20.0.
Chance of winning over time
Daily reruns of the modelEach day is a fresh run of today's model using only the polls that had finished by the day before. Daily runs since Jul 1.
How the forecast is built
Fundamentals D+20.9. Governor races follow a state's partisanship only about half as closely as federal races, and incumbents carry a much bigger edge (both fit on the 2018 and 2022 results). The fundamentals average half the state's lean plus the national environment (D+8.7) and 10 points for the incumbent with the eight published ratings.
Polls D+19.6. 2 polls, adjusted for house effects and likely-voter screens. Polls carry about 67% of the weight.
Polling errors here move with the same state's Senate race and with similar states.
What the forecasters say
Eight published ratingsEvery poll in the model
| Pollster | Field end | Sample | Published | House effect | Adjusted | Weight |
|---|---|---|---|---|---|---|
| ActiVote | Oct 22 | 400 LV | D+17.4 | R+0.6 | D+18.0 | 0.27 |
| Public Policy Polling D internal | Oct 1 | 569 LV | D+20.0 | R+0.9 | D+20.9 | 0.31 |