Illinois governor race odds
Kalshi vs Polymarket · updated Oct 20, 1:00 AM ET
Democrats (JB Pritzker) to win the Illinois governor race: Kalshi 95.9¢, Polymarket US 95.5¢, Polymarket 97.8¢. The exchanges agree within about a cent. A price of 67¢ means the market implies roughly a 67% chance; it is a price, not a forecast.
Illinois governor betting odds by venue
| Venue | Democrats win | Odds | Bid | Ask | Volume |
|---|---|---|---|---|---|
| Kalshi | 95.9¢ | -2339 | 95.5¢ | 96.3¢ | $155k |
| Polymarket US | 95.5¢ | -2122 | 95¢ | 96¢ | $61k |
| Polymarket | 97.8¢ | -4445 | 97¢ | 98.6¢ | $8k |
Each row prices the outcome it names, in cents; 50¢ is a coin flip. Volume is in each venue’s own units. Full venue comparison
Price history
Last 90 days, Democrats win. Kalshi solid, Polymarket dashed. A break in a line is a gap in the record, not a move.
Polls beside the prices
| Pollster | Fieldwork ends | Sample | Result | Lead |
|---|---|---|---|---|
| Public Policy Polling | 2026-10-01 | 569 LV | JB Pritzker 54 · Darren Bailey 34 · Collin Corbett 6 | +20 |
Polls: VoteHub (CC BY 4.0). A poll is a separate reading of the same race; the two can differ with neither being wrong.
Common questions
What are the odds in the Illinois governor race?
Democrats (JB Pritzker) to win the Illinois governor race: Kalshi 95.9¢, Polymarket US 95.5¢, Polymarket 97.8¢. The exchanges agree within about a cent. A price of 67¢ means the market implies roughly a 67% chance; it is a price, not a forecast.
Why do Kalshi and Polymarket show different prices for the same race?
Each exchange is its own order book with its own traders, fees and rules. A gap of a cent or two is ordinary; a larger gap can come from a thin book or from a settlement-rule difference, which is why each venue links to its own contract.
Is the price a forecast?
No. It is what the best order or last trade implies at that venue. ThinBlimp shows both venues side by side and does not take wagers or give advice.
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