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%

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Elections
Maine Senate Exact Outcome
kalshi

Maine Senate Exact Outcome

Mar 31, 2026, 10:00 AM EST - Jan 1, 2027, 10:00 AM EST
Total volume:
$749,982
Volume 24h:
$191
297%
Liquidity:
N/AN/A
Open interest:
$215,759
0.05%

Graham Platner wins

 - Kalshi

Graham Platner wins - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Jan 1, 2027

Will Dem Nominee be Graham Platner AND General Election Winner be Democrat for Jan 2027?

62%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 64¢ buys you 156 shares | Odds: 62% Total Payout: $156 | Net Profit: $56 Multiplier: 1.56x | ROI: 56% High Projected APY: 1,080% 66 days to resolution
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Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Graham Platner wins

Trade
62%
Yes 64¢No 38¢
2¢
N/A
$530,929
0.01%
0.07%
$89,726
2mo 6d
active
kalshi

Republican defeats Graham Platner

40%
Yes 39¢No 64¢
3¢
N/A
$115,967
0.1%
8%
$52,475
2mo 6d
active
kalshi

Republican defeats Janet Mills

1%
Yes 100¢No 100¢
—
N/A
$32,442
N/A
N/A
$26,935
2mo 6d
No
kalshi

Janet Mills wins

0%
Yes 100¢No 100¢
—
N/A
$70,643
N/A
N/A
$46,624
2mo 6d
No
Total markets: 4

Intro

This market tracks whether Graham Platner will be the Democratic nominee and a Democrat will win the general election for the Maine Senate seat by January 2027. Currently, Kalshi gives a 66.0% probability to this outcome. The second most likely outcome, that Graham Platner is the Democratic nominee and a Republican wins the general election, is priced at 31.0%. Kalshi will resolve this market based on the official results of the election and nominee selection, as detailed in their resolution source. Traders should watch the Maine Democratic primary results, expected before January 2027, to see if Graham Platner secures the nomination.

Kalshi

Each market is a combination contract requiring all specified conditions to occur simultaneously before January 1, 2027 for a Yes resolution. The four scenarios are: Graham Platner as Democratic nominee winning the general election; Graham Platner as Democratic nominee losing to a Republican; Janet Mills as Democratic nominee winning the general election; and Janet Mills as Democratic nominee losing to a Republican. If any component becomes impossible or resolves to No, the entire contract immediately resolves to No. Each component is resolved according to its corresponding Kalshi ruleset for Senate party nomination and general election winner.

Frequently asked questions

Currently, prediction market odds often reflect a different perspective than traditional polling averages. While polls aim to capture a snapshot of current voter sentiment, this market aggregates the informed opinions of traders who are incentivized to accurately forecast the outcome. Discrepancies can arise due to factors like differing methodologies, weighting, and the ability of market participants to incorporate a wider range of information, including fundraising data, candidate quality assessments, and potential unforeseen events. It’s common to see this market adjust more quickly to new information than polls, potentially offering a 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 in the Maine Senate election, and the prices of these contracts determine the implied probabilities. As more traders participate, the prices converge towards what the collective wisdom believes is the most likely outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price reflects the perceived risk and potential reward associated with each outcome, and is constantly updated based on supply and demand. This creates a real-time assessment of the election’s trajectory.

This market resolves around Jan 1, 2027, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the outcome will be determined by which candidate wins the general election for the Maine Senate seat. The resolution will be based on official results reported by election authorities and verified against credible public sources. Traders holding contracts on the winning outcome will receive a payout, while those holding contracts on losing outcomes will forfeit their investment. This process ensures a transparent and objective determination of the market’s outcome.

Several signals or events could significantly shift the odds in this market. Major endorsements from influential figures, significant fundraising announcements, and unexpected shifts in polling data could all trigger price movements. Furthermore, any unforeseen events impacting the candidates – such as scandals, health issues, or gaffes during debates – could also cause substantial changes. Changes in the national political landscape, or even local economic conditions in Maine, could also influence traders’ assessments and lead to adjustments in the market’s pricing. Any news that alters perceptions of candidate viability will likely impact trading activity.