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Maine Democratic Senate nominee on July 27?

Which venue prices "Maine Democratic Senate nominee on July 27?" best? Direct comparison of Polymarket, Kalshi, Betfair and Smarkets.

Troy Jackson 55% Candidate F 50% Candidate G 50% Candidate H 50% Volume: $167K Liquidity: $342K Closes: 27 Jul 2026
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Maine Democratic Senate nominee on July 27?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Kalshi Alternative UK) Pick
polygram.ink (preferred broker)
 55% 45% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
 55% 45% 0% Geo-blocked in US/UK/EU USDC, on-chain Trade this market →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD Trade this market →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR Trade this market →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) Trade this market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
Troy Jackson55%
Candidate F50%
Candidate G50%
Candidate H50%
Candidate I50%
Candidate J50%
Other50%
Shenna Bellows27%
Nirav Shah13%
Dan Kleban3%
Janet Mills2%
Valli Geiger2%
Graham Platner1%
Jared Golden1%
Aaron Frey0%
Chellie Pingree0%
Jordan Wood0%
Paige Loud0%

Market context

Based on real-money crowd forecasting, maine democratic senate nominee on july 27? stands at 55% likelihood according to current market consensus. If a party nominee in Maine voluntarily withdraws from their election by July 13 at 5:00PM ET, their political party may replace them by July 27 at 5:00PM ET. This market will re…

Methodology

This page compares Maine Democratic Senate nominee on July 27? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?
Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
What does Polymarket cost vs Kalshi?
Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
Which platform has the deepest liquidity?
Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
Which platform is accessible globally?
Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative UK has a different geo footprint and routes to Polymarket's order book at 0% fees.
Are all these platforms regulated?
No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
Emma RobertsEmma RobertsFinancial JournalistandSarah MitchellSarah MitchellPolitical Markets Writer

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