G2026 Illinois US House 12
G2026 Illinois US House 12
Forecasted Win Probability
Mike Bost*
Julie Fortier
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% | |||
 | |||
How candidates and outside groups are spending money in this race
| Candidate | Raised | Spent | Outside Support | Outside Oppose | Report | Date |
|---|---|---|---|---|---|---|
| Michael Bost | $1,327,225 | $889,522 | - | - | JULY QUARTERLY | 6/30/2026 |
| Michael Bost | $1,107,544 | $753,405 | - | - | APRIL QUARTERLY | 3/31/2026 |
 Julie Fortier | $88,060 | $28,244 | $10 | - | JULY QUARTERLY | 6/30/2026 |
