G2026 Illinois US House 15
G2026 Illinois US House 15Forecasted Win Probability

Mary Miller*

Jennifer Todd
Decision Desk HQ's forecast for this race blends 75% fundamentals and 25% markets. Fundamentals capture the structural conditions of the race, including partisan baseline adjusted for national environment, incumbency, presidential party cycle effects, and net campaign financial advantage.
If the election for Congress were being held today, who would Americans vote for?
Candidate | Average | 1W | 1M |
|---|---|---|---|
Democrat | 45.50% | -1.2% | +0.3% |
Republican | 39.80% | -1.1% | -0.5% |
| Democrat +5.7% | |||