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Senate Combo: Ohio, Iowa, Maine
⌛Ending Soon
polymarket

Who will win Senate seats in Ohio, Iowa, Maine?

Oct 7, 2026, 8:43 PM EST - Nov 3, 2026, 6:59 PM EST
Total volume:
$31,772
Volume 24h:
$1,931
40%
Liquidity:
$87,308
10%
Open interest:
$4,166N/A

Dems sweep

 - Polymarket

Dems sweep - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Nov 3, 2026

Time left: 01d:00h:37m

Will Democrats win the Ohio, Iowa, and Maine Senate seats?

40%chance
Amount

$

Trade on
polymarket

Trade on Polymarket

At 40¢ buys you 250 shares | Odds: 40% Total Payout: $250 | Net Profit: $150 Multiplier: 2.50x | ROI: 150% APY not meaningful
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
40%
1%
Yes 40¢No 61¢
1¢
$21,193
$6,221
15%
55%
N/A
1d 37m
Active
polymarket

Dems OH & ME, Reps IA

Trade
33%
8%
Yes 46¢No 80¢
26¢
$20,865
$3,914
2%
12%
N/A
1d 37m
Active
polymarket

Dems OH, Reps IA & ME

Trade
15%
9%
Yes 24.3¢No 94.7¢
19¢
$680
$3,084
14%
17%
N/A
1d 37m
Active
polymarket

Reps sweep

Trade
10%
Yes 12¢No 92¢
4¢
$10,851
$4,957
4%
21%
N/A
1d 37m
Active
polymarket

Reps OH & IA, Dems ME

Trade
7%
4%
Yes 10.1¢No 96¢
6.1¢
$611
$2,129
11%
15%
N/A
1d 37m
Active
polymarket

Reps OH & ME, Dems IA

Trade
2%
3%
Yes 3¢No 99.4¢
2.4¢
$11,252
$5,225
2%
16%
N/A
1d 37m
Active
polymarket

Dems OH & IA, Reps ME

Trade
1%
2%
Yes 1.7¢No 99.5¢
1.2¢
$11,025
$4,297
2%
5%
N/A
1d 37m
Active
polymarket

Reps OH, Dems IA & ME

Trade
0%
1%
Yes 0.5¢No 99.9¢
0.4¢
$10,831
$1,945
2%
14%
N/A
1d 37m
Active
Total markets: 8

Description

This market will resolve according to the outcome of the United States Senate general elections in Ohio, Iowa, and Maine (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 Ohio, Iowa, and Maine (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 Senate control market tracks the implied probability of different outcomes regarding control of the Senate after the 2026 elections. You’ll find a real-time view of the current odds, the price history showing how those odds have changed over time, and the 24-hour trading volume, which currently stands at $1,901. The total volume traded in this market is $31,772, indicating the level of interest and investment from prediction market participants. This allows you to gauge market sentiment and track how it evolves as new information becomes available.

On Polymarket, this market is priced through a continuous trading mechanism where participants buy and sell shares representing their belief in each possible outcome. The price of these shares directly reflects the implied probability of that outcome occurring. As more traders participate and new information emerges, the prices adjust accordingly, creating a dynamic and responsive market. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market’s pricing is driven entirely by supply and demand, with no external factors influencing the odds beyond the collective judgment of traders.

This market resolves around Nov 3, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the outcome will be determined by which party controls a majority of seats in the United States Senate following the 2026 midterm elections. The final seat distribution will be verified against credible public sources, such as official election results reported by state and federal authorities. The resolution will reflect the actual composition of the Senate following the election, regardless of pre-election predictions or expectations.

Several signals and events could significantly impact this market. Major economic shifts, unexpected candidate announcements, significant political endorsements, and key legislative developments could all influence trader sentiment. Polling data releases, particularly in the states of Ohio, Iowa, and Maine, will be closely watched. Changes in national political trends, such as shifts in presidential approval ratings or public opinion on key issues, could also play a role. Any unforeseen events, like major scandals or geopolitical crises, could introduce volatility and shift the odds in this market.