TOTAL VOLUME:

$150.1b

24H VOL:

$142,857,652

24H TRANSACTIONS:

2,859,322,643

OPEN INTEREST:

$1,733,278,615

483,990

Markets across

35,811

events

MATCHED EVENTS:

3,349

PLATFORM COVERAGE:

5

Polymarket:

38%

VS.

Kalshi:

62%

BETA
Dashboards
Tour
All
Elections
Maine Senate margin of victory
kalshi

Maine Senate margin of victory

Apr 27, 2026, 9:02 PM EST - Nov 3, 2027, 11:00 AM EST
Total volume:
$120,391
Volume 24h:
$566
66%
Liquidity:
N/AN/A
Open interest:
$62,379
0.56%

Republicans, 1+ pts

 - Kalshi

Republicans, 1+ pts - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Nov 3, 2027

Will the margin of victory for Republicans in the U.S. Senate election in Maine be at least 1 percentage points?

37%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 37¢ buys you 270 shares | Odds: 37% Total Payout: $270 | Net Profit: $170 Multiplier: 2.70x | ROI: 170% | APY: 165% 372 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

Republicans, 1+ pts

Trade
37%
Yes 37¢No 66¢
3¢
N/A
$22,955
0.44%
14%
$12,012
1y 1w
active
kalshi

Collins, 2+ pts

34%
Yes 33¢No 73¢
6¢
N/A
$24
0%
N/A
$24
1y 1w
active
kalshi

Republicans, 3+ pts

24%
Yes 28¢No 74¢
2¢
N/A
$39,074
0%
19%
$15,690
1y 1w
active
kalshi

Collins, 4+ pts

21%
3%
Yes 23¢No 83¢
6¢
N/A
$423
35%
N/A
$423
1y 1w
active
kalshi

Collins, 6+ pts

15%
Yes 14¢No 92¢
6¢
N/A
$53
0%
N/A
$38
1y 1w
active
kalshi

Republicans, 5+ pts

12%
Yes 15¢No 87¢
2¢
N/A
$26,195
0%
6%
$12,661
1y 1w
active
kalshi

Republicans, 7+ pts

10%
Yes 9.7¢No 92.9¢
2.6¢
N/A
$24,001
0%
5%
$14,843
1y 1w
active
kalshi

Collins, 8+ pts

7%
Yes 8.5¢No 97¢
5.5¢
N/A
$6,004
2%
139%
$5,278
1y 1w
active
kalshi

Collins, 10+ pts

5%
Yes 4.9¢No 97.9¢
2.8¢
N/A
$617
0.16%
167%
$616
1y 1w
active
kalshi

Collins, 12+ pts

5%
1%
Yes 4¢No 99¢
3¢
N/A
$1,045
27%
27%
$793
1y 1w
active
Total markets: 10

Intro

This market tracks the Republican margin of victory in Maine's 2026 U.S. Senate election. On Kalshi, the probability that Republicans win by at least 5 percentage points stands at 35.0%, while the probability they win by at least 1 percentage point is 31.0%. Resolution will be determined by official election results following the November 2026 Senate election. Watch the 2026 election outcome on November 3, 2027, when results will be finalized and the market will settle.

Kalshi

The Republican Party's victory margin in the Maine Senate race is calculated as their vote percentage minus the vote percentage of the runner-up (or first-place finisher if Republicans lose). Margin ranges are inclusive of their lower bound and exclusive of their upper bound; for example, a margin of exactly 6% falls within the 6-7% range rather than 5-6%. No rounding is applied to the calculated margin. If the Republican Party wins, the margin is positive; if they lose, it is negative; if they tie for first, the margin is zero. For uncontested races where Republicans are the only candidate, the margin is 100 percentage points. Votes cast under multiple party lines for the same underlying Republican entity are summed together.

Frequently asked questions

Currently, prediction market odds often reflect a different assessment than traditional polling averages. While polls aim to capture a snapshot of current voter sentiment, this market aggregates the informed opinions of individuals with skin in the game. This can lead to divergences, as traders consider not only stated preferences but also factors like turnout probabilities, late-breaking news, and the strategic dynamics of the campaign. It's common to see this market adjust more rapidly to new information than polls, offering a potentially more dynamic view of the race.

On Kalshi, this market is priced using a continuous double auction. Traders buy and sell contracts representing different outcomes, and the prices of these contracts reflect the market's collective probability assessment. As more traders participate, the prices converge towards what the market believes is the fair value. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Price movements are influenced by news events, polling data, and any information that affects perceptions of the likely outcome in the Maine Senate election. The current volume suggests active engagement from those following the race.

This market resolves around Nov 3, 2027, with the outcome confirmed once the event is verifiable from credible public reporting. The final margin of victory for the U.S. Senate election in Maine, as reported by official election results, will determine the outcome of this market. Traders will be looking to see which outcome aligns with the final vote count. The resolution will be based on the official results released by the relevant election authorities and reported by major news outlets.

Several signals or events could significantly move this market before Nov 3, 2027. Major endorsements, unexpected fundraising reports, and significant shifts in polling data are all likely to influence trading activity. Debates between candidates, particularly if one candidate performs exceptionally well or poorly, could also trigger price changes. Any unforeseen events impacting voter turnout, such as a major weather event or a national crisis, could also have a substantial effect on the perceived probabilities and, therefore, the prices in this market.