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Politics·Midterms

Closest Senate Race?

icon for Closest Senate Race?
Politics·Midterms

Closest Senate Race?

Texas 26%

Iowa 22.4%

Maine 15%

Ohio (Special) 13.4%

Polymarket

$28,230 Vol.

Texas 26%

Iowa 22.4%

Maine 15%

Ohio (Special) 13.4%

Polymarket

$28,230 Vol.

Texas

$1,078 Vol.

26%

Iowa

$2,677 Vol.

22%

Maine

$1,285 Vol.

15%

Ohio (Special)

$5,040 Vol.

13%

Alaska

$5,272 Vol.

12%

Nebraska

$275 Vol.

5%

Michigan

$2,490 Vol.

5%

New Mexico

$160 Vol.

3%

Florida (Special)

$253 Vol.

3%

Virginia

$5,073 Vol.

2%

North Carolina

$621 Vol.

2%

New Hampshire

$485 Vol.

1%

Georgia

$752 Vol.

1%

Colorado

$662 Vol.

1%

Minnesota

$1,489 Vol.

1%

Montana

$616 Vol.

<1%

The 2026 midterm elections are scheduled to be held on November 3, 2026. This market will resolve according to the US Senate race which has the smallest margin of victory. For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. For elections that include runoffs, ranked-choice, or other multi-round elections, the relevant margin of victory will be that of the round in which the winner is determined. If two state margins of victory are identical, this market will resolve to the tied state whose last name comes first alphabetically. This market will consider the results of all Senate elections, including special elections, that are scheduled to be held in November, 2026, by October 31, 2026, including the results of runoff elections held after November, 2026. The resolution source for this market will be a compilation of all of the relevant state election authorities responsible for certifying statewide elections, however, a consensus of credible reporting may also be used.The Polymarket consensus highlights Texas, Iowa, and the Ohio special as the leading candidates for the tightest 2026 Senate contest, driven by recent polling averages showing margins under 5 points in each. In Texas, primary shifts produced a matchup between Republican Ken Paxton and Democrat James Talarico that remains within 1-3 points. Iowa features an open seat with Republican Ashley Hinson holding slim leads over Democrat Josh Turek in the latest surveys. The Ohio special pits Republican Jon Husted against Democrat Sherrod Brown, with results fluctuating by a few points across Fox and NYT/Siena polls. These races stay closely matched due to strong challenger recruitment, comparable fundraising, and voter priorities on economic conditions that limit separation. Further primary outcomes, late-cycle endorsements, or national polling swings could widen gaps ahead of November.

The 2026 midterm elections are scheduled to be held on November 3, 2026.

This market will resolve according to the US Senate race which has the smallest margin of victory.

For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election.

For elections that include runoffs, ranked-choice, or other multi-round elections, the relevant margin of victory will be that of the round in which the winner is determined.

If two state margins of victory are identical, this market will resolve to the tied state whose last name comes first alphabetically.

This market will consider the results of all Senate elections, including special elections, that are scheduled to be held in November, 2026, by October 31, 2026, including the results of runoff elections held after November, 2026.

The resolution source for this market will be a compilation of all of the relevant state election authorities responsible for certifying statewide elections, however, a consensus of credible reporting may also be used.
Volume
$28,230
End Date
Nov 3, 2026
Market Opened
Jun 26, 2026, 3:52 PM ET

Resolver

0x69c47De9D...
The 2026 midterm elections are scheduled to be held on November 3, 2026. This market will resolve according to the US Senate race which has the smallest margin of victory. For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. For elections that include runoffs, ranked-choice, or other multi-round elections, the relevant margin of victory will be that of the round in which the winner is determined. If two state margins of victory are identical, this market will resolve to the tied state whose last name comes first alphabetically. This market will consider the results of all Senate elections, including special elections, that are scheduled to be held in November, 2026, by October 31, 2026, including the results of runoff elections held after November, 2026. The resolution source for this market will be a compilation of all of the relevant state election authorities responsible for certifying statewide elections, however, a consensus of credible reporting may also be used.
The 2026 midterm elections are scheduled to be held on November 3, 2026. This market will resolve according to the US Senate race which has the smallest margin of victory. For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. For elections that include runoffs, ranked-choice, or other multi-round elections, the relevant margin of victory will be that of the round in which the winner is determined. If two state margins of victory are identical, this market will resolve to the tied state whose last name comes first alphabetically. This market will consider the results of all Senate elections, including special elections, that are scheduled to be held in November, 2026, by October 31, 2026, including the results of runoff elections held after November, 2026. The resolution source for this market will be a compilation of all of the relevant state election authorities responsible for certifying statewide elections, however, a consensus of credible reporting may also be used.The Polymarket consensus highlights Texas, Iowa, and the Ohio special as the leading candidates for the tightest 2026 Senate contest, driven by recent polling averages showing margins under 5 points in each. In Texas, primary shifts produced a matchup between Republican Ken Paxton and Democrat James Talarico that remains within 1-3 points. Iowa features an open seat with Republican Ashley Hinson holding slim leads over Democrat Josh Turek in the latest surveys. The Ohio special pits Republican Jon Husted against Democrat Sherrod Brown, with results fluctuating by a few points across Fox and NYT/Siena polls. These races stay closely matched due to strong challenger recruitment, comparable fundraising, and voter priorities on economic conditions that limit separation. Further primary outcomes, late-cycle endorsements, or national polling swings could widen gaps ahead of November.

The 2026 midterm elections are scheduled to be held on November 3, 2026.

This market will resolve according to the US Senate race which has the smallest margin of victory.

For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election.

For elections that include runoffs, ranked-choice, or other multi-round elections, the relevant margin of victory will be that of the round in which the winner is determined.

If two state margins of victory are identical, this market will resolve to the tied state whose last name comes first alphabetically.

This market will consider the results of all Senate elections, including special elections, that are scheduled to be held in November, 2026, by October 31, 2026, including the results of runoff elections held after November, 2026.

The resolution source for this market will be a compilation of all of the relevant state election authorities responsible for certifying statewide elections, however, a consensus of credible reporting may also be used.
Volume
$28,230
End Date
Nov 3, 2026
Market Opened
Jun 26, 2026, 3:52 PM ET

Resolver

0x69c47De9D...
The 2026 midterm elections are scheduled to be held on November 3, 2026. This market will resolve according to the US Senate race which has the smallest margin of victory. For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. For elections that include runoffs, ranked-choice, or other multi-round elections, the relevant margin of victory will be that of the round in which the winner is determined. If two state margins of victory are identical, this market will resolve to the tied state whose last name comes first alphabetically. This market will consider the results of all Senate elections, including special elections, that are scheduled to be held in November, 2026, by October 31, 2026, including the results of runoff elections held after November, 2026. The resolution source for this market will be a compilation of all of the relevant state election authorities responsible for certifying statewide elections, however, a consensus of credible reporting may also be used.

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Frequently Asked Questions

"Closest Senate Race?" is a prediction market on Polymarket with 16 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Texas" at 26%, followed by "Iowa" at 22%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 26¢ implies that the market collectively assigns a 26% 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.

As of today, "Closest Senate Race?" has generated $28.2K in total trading volume since the market launched on Jun 26, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Closest Senate Race?," browse the 16 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 "Closest Senate Race?" is "Texas" at 26%, meaning the market assigns a 26% chance to that outcome. The next closest outcome is "Iowa" at 22%. 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 "Closest Senate Race?" 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.