TOTAL VOLUME:

$142.4b

24H VOL:

$104,871,197

24H TRANSACTIONS:

2,643,541,936

OPEN INTEREST:

$1,592,701,755

469,827

Markets across

35,657

events

MATCHED EVENTS:

2,899

PLATFORM COVERAGE:

5

Polymarket:

38%

VS.

Kalshi:

62%

BETA
Dashboards
Tour
All
Elections
How many Senate seats will Democrats win in the Midterms?
kalshi

How many Senate seats will Democrats win in the Midterms?

Sep 21, 2026, 8:00 PM EST - Feb 1, 2027, 10:00 AM EST
Total volume:
$57,827
Volume 24h:
$2,031
72%
Liquidity:
N/AN/A
Open interest:
$30,408
7%

At least 10

 - Kalshi

At least 10 - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Feb 1, 2027

Will the number of U.S. Senate seats won by Democratic Party candidates be at least 10 in the 2026 U.S. Senate elections?

96%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 96¢ buys you 104 shares | Odds: 96% Total Payout: $104 | Net Profit: $4 Multiplier: 1.04x | ROI: 4% | APY: 15% Illiquid market 109 days to resolution
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
kalshi

At least 10

Trade
96%
Yes 100¢No 3¢
3¢
N/A
$152
0%
0%
$121
3mo 2w 5d
active
kalshi

At least 11

95%
Yes 100¢No 4¢
4¢
N/A
$3,391
0%
39%
$850
3mo 2w 5d
active
kalshi

At least 12

95%
Yes 95¢No 7¢
2¢
N/A
$9,161
0%
1%
$5,655
3mo 2w 5d
active
kalshi

At least 14

93%
Yes 93¢No 9¢
2¢
N/A
$5,489
0.57%
1%
$2,011
3mo 2w 5d
active
kalshi

At least 13

90%
Yes 96¢No 7¢
3¢
N/A
$1,364
0%
0%
$1,364
3mo 2w 5d
active
kalshi

At least 15

84%
Yes 86¢No 17¢
3¢
N/A
$11,319
0%
0.04%
$2,948
3mo 2w 5d
active
kalshi

At least 16

76%
Yes 76¢No 25¢
1¢
N/A
$1,370
0%
4%
$964
3mo 2w 5d
active
kalshi

At least 17

62%
Yes 65¢No 37¢
2¢
N/A
$3,730
0%
0.41%
$2,311
3mo 2w 5d
active
kalshi

At least 18

59%
Yes 49¢No 53¢
2¢
N/A
$1,935
0%
0%
$1,472
3mo 2w 5d
active
kalshi

At least 19

35%
Yes 35¢No 66¢
1¢
N/A
$6,112
0%
4%
$4,054
3mo 2w 5d
active
kalshi

At least 20

19%
Yes 22¢No 82¢
4¢
N/A
$6,487
45%
46%
$6,143
3mo 2w 5d
active
kalshi

At least 21

4%
Yes 8¢No 95¢
3¢
N/A
$1,984
0%
5%
$623
3mo 2w 5d
active
kalshi

At least 22

3%
Yes 6¢No 97¢
3¢
N/A
$5,334
0%
0.06%
$1,893
3mo 2w 5d
active
Total markets: 13

Description

The outcome depends on the number of U.S. Senate seats won by Democratic Party candidates in the 2026 elections, as determined by major media declarations. The count includes all regularly scheduled and special elections occurring on November 3, 2026, with specific rules for how victories are confirmed and attributed.

Kalshi

The market resolves based on the total number of U.S. Senate seats won by Democratic Party candidates in the November 3, 2026 elections across all 35 contested seats, including special elections in Florida and Ohio. A seat is counted for the Democratic Party only if the winning candidate's candidacy was recorded with a Democratic designation by the relevant election authority—this includes recognized state affiliates like the Minnesota Democratic-Farmer-Labor Party or North Dakota Democratic-Nonpartisan League Party, candidates on specific ballot lines, or declared write-in candidates. Caucus affiliations or later party changes do not affect the count; only the designation at the time of election matters. Media declarations from eight designated sources—the New York Times, The Associated Press, Decision Desk HQ, CNN, Fox News, NBC News, CBS News, and ABC News—determine the official outcome. A seat is officially counted when at least four of these sources have declared a winner without any contradictory declarations. If a seat does not meet this media consensus criterion by the market's expiration time, the state-certified election result determines the winner. Runoff contests are counted once their final results are declared. The market can resolve early if four or more designated sources agree on an outcome with no contradictions, allowing for accelerated closure before the official expiration.

Frequently asked questions

On Kalshi, the Senate control market dashboard tracks the current odds of Democrats winning various numbers of Senate seats in the upcoming Midterms. You’ll find a price for each possible outcome, reflecting what traders are willing to pay for a ‘yes’ vote on that result. The dashboard also displays the 24-hour trading volume, currently at $2,031, and the total volume traded to date, which is $57,827. This allows you to see how much activity there is in this market and which outcomes are attracting the most interest. The dashboard provides a dynamic view of predictions surrounding the Senate control market.

On Kalshi, this market is priced through a continuous double auction, meaning buyers and sellers set the prices for each possible outcome. Traders buy ‘yes’ contracts if they believe an outcome is more likely to occur, and sell ‘no’ contracts if they believe it’s less likely. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of a contract represents the probability of that outcome happening, scaled to a value between 0 and 100. As more traders participate, the prices adjust to reflect the collective wisdom of the crowd, providing a dynamic and real-time forecast for the Senate control market. This creates a constantly evolving assessment of the potential results.

This market resolves around Feb 1, 2027, with the outcome confirmed once the final Senate seat distribution is verifiable from credible public reporting. The resolution will be based on the official results certified by relevant election authorities. This market tracks the total number of Senate seats held by Democrats after the Midterms, and the outcome will reflect that final count. Traders will be able to claim their winnings or fulfill their obligations based on the verified results. The resolution process ensures a transparent and accurate determination of the market’s outcome.

Several signals and events could significantly move this market. Major economic announcements, shifts in key poll numbers, unexpected candidate endorsements, and significant political events could all influence trader sentiment. Any news that alters perceptions of Democratic chances in competitive Senate races will likely impact prices. For example, a strong fundraising report for a Republican challenger could cause prices to shift, while a favorable Supreme Court ruling for Democrats might have the opposite effect. Unexpected events, such as a major scandal involving a candidate, could also cause rapid price movements in this market.