Iowa Governor Election Winner: Odds & Probability
Prediction markets currently give Democrats a 77.0% chance of winning the 2026 Iowa governor race, a the favored outcome.
Will the Democrats win the Iowa governor race in 2026?
Updated · Volume $79.4K
| Outcome | Probability | 24h |
|---|---|---|
| Will the Democrats win the Iowa governor race in 2026? | 77.0% | 0.0 |
| Will the Republicans win the Iowa governor race in 2026? | 24.0% | +0.5 |
| Will Option E win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option C win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option D win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option I win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option G win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option A win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option H win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option F win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option J win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Other win the Iowa governor race in 2026? | 0.0% | 0.0 |
| Will Option B win the Iowa governor race in 2026? | 0.0% | 0.0 |
The Democratic win scenario is the the favored outcome, while a Republican victory is seen as a substantial minority view, and all other outcomes are remote.
Context
Democrats’ probability of winning sits at 77.0%. It has ranged from 71.5% to 78.0% over the observed period. The market resolves based on which party’s nominee wins the 2026 Iowa gubernatorial election. A candidate is considered the Democratic or Republican nominee if they are the party’s official nominee; independents and third-party candidates are not covered by these options. The resolution relies on calls from the Associated Press, Fox News, and NBC. The market settles once all three sources project the same winner, or via official certification if they do not agree. The probability can shift as the election scheduled for Nov 3, 2026 approaches and as formal events occur—party nominations, which determine the candidates covered by each option, and announcements from the resolution sources. The final settlement remains the same: consensus among the AP, Fox News, and NBC, or official certification if they split.
FAQ
How does the market decide the winner?
It follows calls made by the Associated Press, Fox News, and NBC. Once all three outlets project the same candidate, the market resolves.
What if the three news sources disagree?
If they do not all call the race for the same candidate, the market defers to the official Iowa election certification to determine the winner.
Which candidates count as Democrat or Republican in this market?
The market uses the official party nominees. If a candidate runs as an independent but has past party ties, they are not counted under the Democrat or Republican options.
Are third-party or independent candidates covered?
Currently, only the Democratic and Republican nominees are listed. The market description allows for other candidates to be added later, but they are not included now.
Data: Polymarket · Methodology · Not financial advice