Maine Democratic Senate nominee on July 27?

Platform comparison

Market context

Graham Platner officially withdrew from the 2026 Maine U.S. Senate race on Wednesday, ending his campaign after a former partner accused him of sexual assault and top Democratic allies rescinded endorsements [1][5]. This withdrawal triggers a rare procedural mechanism under Maine state law, allowing the Maine Democratic Party to nominate a replacement candidate by the July 27 deadline, with no new primary required [2][8]. The market’s current 1% implied probability reflects the extreme uncertainty surrounding who will emerge as the apparent nominee, as the party has voted to hold a state convention to select a successor but has not yet announced the full timeline or candidate requirements [1][8].

Historically, no political party in Maine has ever replaced its nominee in a general election, making this succession battle unprecedented and highly volatile [8]. Comparable cases of sudden candidate withdrawals in high-stakes races often result in chaotic, compressed selection processes where multiple insiders jockey for position, yet the final choice remains opaque until the official announcement [3][4]. Traders should monitor the party’s upcoming convention details, the filing of exploratory committees by potential contenders like former Senate President Troy Jackson or David Costello, and any official statements from Executive Director Devon Murphy-Anderson regarding the selection criteria [1][3]. The settlement window closes just before the party’s deadline, meaning the market will resolve based on the individual the party appears to have nominated by July 27, regardless of whether the final ballot is printed [2][8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Maine Democratic Senate nominee on July 27?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.