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Elections·Primaries

Iowa Republican Senate Primary Winner

Market icon
Elections·Primaries

Iowa Republican Senate Primary Winner

Ashley Hinson 95.4%

John Berman 2.3%

Jim Carlin 1.5%

Joshua Smith <1%

Polymarket
NEW

Ashley Hinson 95.4%

John Berman 2.3%

Jim Carlin 1.5%

Joshua Smith <1%

Polymarket
NEW

Ashley Hinson

$6,790 Vol.

95%

John Berman

$0 Vol.

2%

Jim Carlin

$0 Vol.

2%

Joshua Smith

$0 Vol.

1%

This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.

This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa.

If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.
Volume
$6,790
End Date
Jun 2, 2026
Market Opened
Nov 13, 2025, 2:11 PM ET

Resolver

0x2F5e3684c...
This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.
This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.This market will resolve according to the winner of the Republican Primary for United States Senator from Iowa. If no 2026 Iowa Republican Senate Primary takes place, this market will resolve to "Other". The resolution source for this market will be the first announcement of the results from the Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.

Rep. Ashley Hinson's commanding 94.5% implied probability in the Iowa Republican Senate primary stems from her incumbency in Iowa's 1st Congressional District, superior fundraising with over $1.5 million cash on hand, and dominant performance in her 2024 reelection, capturing 54% amid a favorable national GOP wave. Early internal polling shows her leading potential challengers like state Sen. Jim Carlin by 40+ points, bolstered by endorsements from agricultural groups and alignment with former President Trump's coalition. Trader consensus reflects low perceived risk, with minor candidates trailing due to limited resources. Realistic challenges include Sen. Chuck Grassley's vigorous incumbent campaign consolidating support, a high-profile entrant like Gov. Kim Reynolds, or an unforeseen Hinson scandal before the 2026 filing deadline.

Experimental AI-generated summary referencing Polymarket data · Updated

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Frequently Asked Questions

"Iowa Republican Senate Primary Winner" 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 "Ashley Hinson" at 95%, followed by "John Berman" at 2%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 95¢ implies that the market collectively assigns a 95% 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 Republican Senate Primary Winner" is a newly created market on Polymarket, launched on Nov 13, 2025. 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 Republican Senate Primary Winner," 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 Republican Senate Primary Winner" is "Ashley Hinson" at 95%, meaning the market assigns a 95% chance to that outcome. The next closest outcome is "John Berman" at 2%. 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 Republican Senate Primary Winner" 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.