TOTAL VOLUME:

$154.8b

24H VOL:

$260,393,102

24H TRANSACTIONS:

2,984,640,614

OPEN INTEREST:

$1,894,304,386

408,643

Markets across

39,771

events

MATCHED EVENTS:

4,493

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

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Politics
Senate Combo: Iowa, Kansas, Nebraska
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polymarket

Who will win Senate races in Iowa, Kansas, Nebraska?

Oct 15, 2026, 11:56 AM EST - Nov 3, 2026, 6:59 PM EST
Total volume:
$14,330
Volume 24h:
$952
180%
Liquidity:
$93,570
37%
Open interest:
$2,430N/A

Reps sweep

 - Polymarket

Reps sweep - Polymarket

1W

News

Positive

Negative

Neutral

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Vol.

·

Resolves Nov 3, 2026

Time left: 17h:04m:47s

Will Republicans win the Iowa, Kansas, and Nebraska Senate seats?

28%chance
Amount

$

Trade on
polymarket

Trade on Polymarket

At 29¢ buys you 345 shares | Odds: 28% Total Payout: $345 | Net Profit: $245 Multiplier: 3.45x | ROI: 245% | 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

Reps sweep

Trade
28%
8%
Yes 29¢No 73¢
2¢
$25,885
$4,850
8%
32%
N/A
17h 4m
Active
polymarket

Dems IA & KS, Reps NE

26%
4%
Yes 27¢No 76¢
3¢
$10,849
$4,536
12%
40%
N/A
17h 4m
Active
polymarket

Dems IA & KS, Ind NE

23%
Yes 24¢No 79¢
3¢
$12,776
$1,642
0%
161%
N/A
17h 4m
Active
polymarket

Reps IA & NE, Dems KS

22%
5%
Yes 24.6¢No 81.2¢
5.8¢
$1,122
$609
11%
56%
N/A
17h 4m
Active
polymarket

Dems IA, Reps KS, Ind NE

6%
1%
Yes 8¢No 97¢
5¢
$10,714
$1,014
0.06%
49%
N/A
17h 4m
Active
polymarket

Dems IA, Reps KS & NE

5%
Yes 7¢No 98¢
5¢
$10,663
$671
0%
22%
N/A
17h 4m
Active
polymarket

Reps IA, Dems KS, Ind NE

2%
Yes 2.9¢No 99.2¢
2.1¢
$10,860
$414
14%
20%
N/A
17h 4m
Active
polymarket

Reps IA & KS, Ind NE

0%
2%
Yes 0.8¢No 99.9¢
0.7¢
$10,700
$593
1%
28%
N/A
17h 4m
Active
Total markets: 8

Description

This market will resolve according to the outcome of the United States Senate general elections in Iowa, Kansas, and Nebraska 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. Because no Democratic candidate is on the ballot in Nebraska, the Nebraska race is represented by “Republican” and “Independent” (Ind) options. The “Independent” option refers to a win by a candidate running as an independent in the Nebraska Senate election. For purposes of this market, Dan Osborn will be considered to be an Independent regardless of any affiliation that he may have with any 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 the Iowa or Kansas election, or a third-party candidate wins the Nebraska election, 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 Iowa, Kansas, and Nebraska 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. Because no Democratic candidate is on the ballot in Nebraska, the Nebraska race is represented by “Republican” and “Independent” (Ind) options. The “Independent” option refers to a win by a candidate running as an independent in the Nebraska Senate election. For purposes of this market, Dan Osborn will be considered to be an Independent regardless of any affiliation that he may have with any 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 the Iowa or Kansas election, or a third-party candidate wins the Nebraska election, 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 current odds of various outcomes for control of the Senate following the 2026 elections, specifically focusing on Iowa, Kansas, and Nebraska. You’ll find the implied probability of each scenario, a price history chart showing how those probabilities have changed over time, and the 24-hour trading volume, currently at $1,012. Total volume for this market is $14,330. This allows you to see how traders are reacting to news and events as they unfold, and gauge the market’s overall sentiment.

Currently, prediction market odds often reflect a different perspective than traditional polling averages. Polling data frequently shows close races in these three states, but this market indicates a strong likelihood of a specific outcome, with 28.0% probability assigned to Republicans winning the Iowa and Nebraska Senate seats, and Democrats winning Kansas. It’s important to remember that polls capture a snapshot in time, while this market represents a continuous assessment of probabilities based on a wider range of information and trader beliefs. The difference between the two can offer valuable insights.

This market resolves around Nov 3, 2026, with the outcome confirmed once the results of the Senate elections in Iowa, Kansas, and Nebraska are verifiable from credible public reporting. The resolution will be based on which party controls each of the three Senate seats following the election. The market will determine whether Republicans win both Iowa and Nebraska, and Democrats win Kansas, as defined by the market’s conditions on Polymarket. Any disputes will be handled according to Polymarket’s established procedures.

Several factors could significantly impact this market. Major economic shifts, unexpected candidate announcements, significant changes in polling data, or key endorsements could all cause traders to reassess their probabilities. Furthermore, any unforeseen events affecting the campaigns or the political landscape in Iowa, Kansas, or Nebraska could lead to substantial price movements. Developments related to fundraising, debate performances, or even major news stories could all influence trading activity and shift the odds in this market.