TOTAL VOLUME:

$154.6b

24H VOL:

$323,326,361

24H TRANSACTIONS:

2,984,640,614

OPEN INTEREST:

$1,969,435,260

419,363

Markets across

40,411

events

MATCHED EVENTS:

4,612

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

BETA
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Politics
Senate Combo: Michigan and Ohio
⌛Ending Soon
polymarket

Who will win Senate seats in Michigan and Ohio?

Oct 28, 2026, 6:37 PM EST - Nov 3, 2026, 6:59 PM EST
Total volume:
$11,558
Volume 24h:
$2,886
6%
Liquidity:
$49,751
200%
Open interest:
$3,083N/A

Dems sweep

 - Polymarket

Dems sweep - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Nov 3, 2026

Time left: 20h:28m:48s

Will Democrats win the Michigan and Ohio Senate seats?

71%chance
Amount

$

Trade on
polymarket

Trade on Polymarket

At 71¢ buys you 141 shares | Odds: 71% Total Payout: $141 | Net Profit: $41 Multiplier: 1.41x | ROI: 41% | APY: N/A
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Dems sweep

Trade
71%
2%
Yes 71¢No 30¢
1¢
$24,027
$6,869
19%
N/A
N/A
20h 28m
Active
polymarket

Dems MI, Reps OH

13%
2%
Yes 15¢No 89¢
4¢
$11,441
$1,345
58%
N/A
N/A
20h 28m
Active
polymarket

Reps sweep

12%
1%
Yes 15¢No 91¢
6¢
$2,235
$1,777
104%
N/A
N/A
20h 28m
Active
polymarket

Reps MI, Dems OH

2%
7%
Yes 3.4¢No 99.2¢
2.6¢
$12,048
$1,567
34%
N/A
N/A
20h 28m
Active
Total markets: 4

Description

This market will resolve according to the outcome of the United States Senate general elections in Michigan and Ohio (including the special election in Ohio) that are currently scheduled for November 3, 2026, inclusive of any potential runoffs. 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 one 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 all 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 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.

Polymarket

This market will resolve according to the outcome of the United States Senate general elections in Michigan and Ohio (including the special election in Ohio) that are currently scheduled for November 3, 2026, inclusive of any potential runoffs. 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 one 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 all 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 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.

Frequently asked questions

On Polymarket, the dashboard for the Michigan and Ohio Senate races tracks the probabilities of various outcomes as determined by traders. You’ll find the current odds reflecting who is expected to win each seat, along with a price history showing how those probabilities have shifted over time. The dashboard also displays the 24-hour trading volume, currently at $2,886, and the total volume traded to date, which is $11,558. This allows you to see how much activity there is in this market and how opinions are evolving.

Currently, prediction market odds offer a distinct perspective compared to traditional polling averages for the Michigan and Ohio Senate races. While polls aim to capture a snapshot of current voter sentiment, this market reflects what traders believe will *actually* happen, incorporating a wider range of information and potential events. Polling averages often show a close race in both states, but the implied probabilities in this market may differ, potentially indicating a stronger or weaker expectation for a particular party to win. It's important to consider both sources of information when forming your own view.

On Polymarket, this market is priced using a continuous double auction, where traders buy and sell shares representing their beliefs about the outcome of the Michigan and Ohio Senate races. The price of a share directly reflects the probability of that outcome occurring, as perceived by the market participants. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the price adjusts accordingly, providing a dynamic assessment of the race. The current price indicates the collective forecast of all traders on Polymarket.

This market resolves around Nov 3, 2026, with the outcome confirmed once the results of the Michigan and Ohio Senate elections are verifiable from credible public reporting. The resolution will be based on the official election results certified by the relevant state authorities. This will determine which party controls each Senate seat, and therefore the outcome of this market. Traders should monitor news sources for official announcements regarding the election results as we approach the resolution date.

Several signals or events could significantly move this market before it resolves on Nov 3, 2026. Major developments in the campaigns, such as significant fundraising announcements, endorsements from prominent figures, or impactful debate performances, could all shift trader sentiment. Unexpected economic news, national political trends, or even unforeseen scandals involving candidates could also play a role. Additionally, changes in polling data, particularly if they consistently show a shift in voter preferences, would likely influence the probabilities reflected in this market.