Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| Chuck Gray | 100% |
| Candidate A | 50% |
| Candidate B | 50% |
| Candidate C | 50% |
| Candidate D | 50% |
| Candidate E | 50% |
| Other | 50% |
| Jillian Balow | 0% |
| Bo Biteman | 0% |
| Frank Chapman | 0% |
| Kevin Christensen | 0% |
| Richard Dodson | 0% |
| Steve Friess | 0% |
| David Giralt | 0% |
| Keith Goodenough | 0% |
| Reid Rasner | 0% |
| John Romero-Martinez | 0% |
Market context
Wyoming's at-large House seat will be contested in the 2026 midterms, with the Republican primary scheduled for 18 August 2026. The market currently prices at 100% YES on Polygon, meaning traders are pricing near-certainty that a Republican nominee will be formally announced by the 3 November 2026 deadline. This reflects the mechanical reality that Wyoming is a heavily Republican state where the primary winner becomes the de facto representative; the general election in November is a formality. The 100% probability on-chain suggests no material doubt exists about whether a nominee emerges, not about which candidate prevails.
Wyoming's Republican primary dynamics have historically produced uncontested or lightly contested races for its single House seat. The state has not seen a competitive open primary for this seat since 2008, when Barbara Cubin retired. Incumbent Harriet Hageman, elected in 2022 with 66% of the vote, has not announced retirement plans as of early 2025. If Hageman seeks re-election, the primary becomes a retention race; if she steps aside, the field will likely consolidate around a state-establishment-backed candidate within months of any announcement. Either scenario makes a November nominee announcement highly probable.
Key catalysts include Hageman's formal re-election announcement or retirement statement (expected by spring 2026), any primary challenger declarations, and Wyoming Republican Party convention activity. The state party typically endorses before the August primary, which shapes candidate viability. Traders should monitor local Wyoming news sources and RNC filings for candidate registration deadlines, typically 60 days before the primary. The 100% pricing reflects structural certainty rather than predictive confidence about the nominee's identity.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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.
Trade WY-AL Republican Primary Winner on PolyGram
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