Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
97% | 3% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| November 2 | 97% |
| July 31 | 89% |
| July 17 | 88% |
| July 10 | 71% |
| July 7 | 65% |
| July 6 | 12% |
Market context
Graham Platner, the Democratic nominee for Maine’s 2026 U.S. Senate seat, is facing a 92% crowd-implied probability that he will withdraw from the race before November 2, 2026. On Polymarket, this contract trades at £0.92 in USDC on Polygon, reflecting near-certainty via conditional tokens that he will suspend or officially announce his withdrawal. The market resolves to “Yes” if Platner withdraws or suspends his campaign by the deadline, with official statements from him or his legal team as the primary resolution source.
Historically, high-profile candidates in contested Senate races have withdrawn amid scandal or strategic recalibration, such as Maine Governor Janet Mills suspending her own 2026 Senate bid after a near-certain primary loss to Platner [3]. Platner’s campaign has already been marred by scandals, including allegations of sexting men and a Nazi tattoo, which BBC News highlighted as pivotal to his primary win despite controversy [2]. These precedents frame the 92% probability as grounded in real-world instability rather than abstract speculation.
Traders should monitor Platner’s public announcements, campaign schedules, and any legal developments, particularly given his recent address to CNN about his string of controversies [7]. A sudden withdrawal could follow if new evidence emerges or if internal campaign dynamics shift, as seen when Mills exited after assessing her electoral viability [3]. The settlement window ends 2026-11-02T17:00:00Z, so any pre-deadline announcement will trigger immediate resolution via on-chain mechanics.
Methodology
We track Will Graham Platner drop out by 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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