Pronóstico: Maine Democratic Senate nominee on July 27?

Platform comparison

Market context

Graham Platner has formally withdrawn from the 2026 Maine U.S. Senate race on Wednesday, ending his campaign after a former partner accused him of sexual assault in 2021, an allegation he denies but which caused his support to collapse among top Democratic allies[1][5]. This exit triggers a compressed replacement window under state law: the Maine Democratic Party must nominate a successor by 5 p.m. ET on July 27, with no new primary held, leaving the party to select a candidate via a convention or committee vote[1][3].

Historically, such late-stage nominee replacements in high-stakes Senate races rarely succeed in flipping seats unless the replacement is a well-established figure with immediate name recognition; comparable cases show that compressed timelines often lead to fragmented fields and weaker electoral performance against incumbents like Susan Collins, who is seeking her sixth term[1][2]. The current 1% market probability reflects this structural disadvantage, as the party lacks a clear frontrunner and faces internal infighting, with multiple contenders including former state senator Troy Jackson, ex-Maryland official David Costello, and Rep. Jared Golden already jockeying for the spot[2][4].

Traders should monitor the Maine Democratic Party’s official announcement of the replacement timeline and candidate selection process, expected within days, as well as any formal declarations from potential contenders like Jackson, who filed an exploratory committee on Tuesday, or Golden, who remains open but unconfirmed[2][4]. The party’s Executive Director Devon Murphy-Anderson has promised an “open, inclusive, transparent” process but has withheld details until Platner’s withdrawal is complete, making the next 48 hours critical for identifying whether a consensus candidate emerges or if the field remains fractured[4]. Any delay in naming a nominee past July 20 could further depress the probability of a viable challenger, as the compressed timeline limits outreach and fundraising capacity[3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Pronóstico: 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

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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.

Can I import form data and lineups?

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