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Politics·Rob Sand

Iowa Senate and Governor Combo

icon for Iowa Senate and Governor Combo
Politics·Rob Sand

Iowa Senate and Governor Combo

Dems sweep 37%

Dems win Gov, Reps win Senate 30%

Reps sweep 29%

Reps win Gov, Dems win Senate 1.4%

Polymarket
NEW

Dems sweep 37%

Dems win Gov, Reps win Senate 30%

Reps sweep 29%

Reps win Gov, Dems win Senate 1.4%

Polymarket
NEW

Dems sweep

$870 Vol.

37%

Dems win Gov, Reps win Senate

$2,508 Vol.

30%

Reps sweep

$1,654 Vol.

29%

Reps win Gov, Dems win Senate

$341 Vol.

1%

This market will resolve according to the outcome of both the Gubernatorial and United States Senate general elections in Iowa that are currently scheduled for November 3, 2026. A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. If the results of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins one of these elections, this market will resolve to "Other". For purposes of this market, a "sweep" is when a party wins both races. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant Senate and Gubernatorial elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification. Recent polling shows tight contests in both Iowa races, with Republican Ashley Hinson holding a narrow lead over Democrat Josh Turek in the open Senate seat and Democrat Rob Sand ahead of Republican Zach Lahn in the open gubernatorial race. These results, including a Suffolk University survey from late August placing Hinson at 45% to Turek’s 41% and Sand at 48% to Lahn’s 44%, align with forecasters rating the Senate contest a toss-up and the governor’s race leaning Democratic. Traders assign the highest probability to mixed outcomes or “other” scenarios because Iowa’s Republican lean coexists with competitive candidates, crossover appeal for Sand, and voter dissatisfaction with national conditions that could produce split results on November 3. The low odds on a Republican governor-Democratic Senate combination reflect Lahn’s weaker positioning relative to Hinson in current surveys.

This market will resolve according to the outcome of both the Gubernatorial and United States Senate general elections in Iowa that are currently scheduled for November 3, 2026.

A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

If the results of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins one of these elections, this market will resolve to "Other".

For purposes of this market, a "sweep" is when a party wins both races.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant Senate and Gubernatorial elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.
Volume
$5,373
End Date
Nov 3, 2026
Market Opened
Aug 11, 2026, 11:06 AM ET

Resolver

0x69c47De9D...
This market will resolve according to the outcome of both the Gubernatorial and United States Senate general elections in Iowa that are currently scheduled for November 3, 2026. A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. If the results of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins one of these elections, this market will resolve to "Other". For purposes of this market, a "sweep" is when a party wins both races. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant Senate and Gubernatorial elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.
This market will resolve according to the outcome of both the Gubernatorial and United States Senate general elections in Iowa that are currently scheduled for November 3, 2026. A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. If the results of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins one of these elections, this market will resolve to "Other". For purposes of this market, a "sweep" is when a party wins both races. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant Senate and Gubernatorial elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification. Recent polling shows tight contests in both Iowa races, with Republican Ashley Hinson holding a narrow lead over Democrat Josh Turek in the open Senate seat and Democrat Rob Sand ahead of Republican Zach Lahn in the open gubernatorial race. These results, including a Suffolk University survey from late August placing Hinson at 45% to Turek’s 41% and Sand at 48% to Lahn’s 44%, align with forecasters rating the Senate contest a toss-up and the governor’s race leaning Democratic. Traders assign the highest probability to mixed outcomes or “other” scenarios because Iowa’s Republican lean coexists with competitive candidates, crossover appeal for Sand, and voter dissatisfaction with national conditions that could produce split results on November 3. The low odds on a Republican governor-Democratic Senate combination reflect Lahn’s weaker positioning relative to Hinson in current surveys.

This market will resolve according to the outcome of both the Gubernatorial and United States Senate general elections in Iowa that are currently scheduled for November 3, 2026.

A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

If the results of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins one of these elections, this market will resolve to "Other".

For purposes of this market, a "sweep" is when a party wins both races.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant Senate and Gubernatorial elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.
Volume
$5,373
End Date
Nov 3, 2026
Market Opened
Aug 11, 2026, 11:06 AM ET

Resolver

0x69c47De9D...
This market will resolve according to the outcome of both the Gubernatorial and United States Senate general elections in Iowa that are currently scheduled for November 3, 2026. A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. If the results of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins one of these elections, this market will resolve to "Other". For purposes of this market, a "sweep" is when a party wins both races. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant Senate and Gubernatorial elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.

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Frequently Asked Questions

"Iowa Senate and Governor Combo" is a prediction market on Polymarket with 4 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Dems sweep" at 37%, followed by "Dems win Gov, Reps win Senate" at 30%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 37¢ implies that the market collectively assigns a 37% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Iowa Senate and Governor Combo" is a newly created market on Polymarket, launched on Aug 11, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Iowa Senate and Governor Combo," browse the 4 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Iowa Senate and Governor Combo" is "Dems sweep" at 37%, meaning the market assigns a 37% chance to that outcome. The next closest outcome is "Dems win Gov, Reps win Senate" at 30%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Iowa Senate and Governor Combo" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.