Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
77% | 23% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
77% | 23% | 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.
| Outcome | Probability |
|---|---|
| Eric Barlow | 77% |
| Megan Degenfelder | 22% |
| Brent Bien | 1% |
| Joseph Kibler | 0% |
| Reid Rasner | 0% |
| Bo Biteman | 0% |
| Chuck Gray | 0% |
| Chip Neiman | 0% |
| Ogen Driskill | 0% |
| Mark Gordon | 0% |
| Harriet Hageman | 0% |
| Curt Meier | 0% |
| Tara Nethercott | 0% |
| Cheri Steinmetz | 0% |
| Paul Ulrich | 0% |
| Candidate A | 0% |
| Candidate B | 0% |
| Candidate C | 0% |
| Candidate D | 0% |
| Candidate E | 0% |
| Candidate F | 0% |
| Candidate G | 0% |
| Candidate H | 0% |
| Candidate I | 0% |
| Candidate J | 0% |
| Candidate K | 0% |
| Candidate L | 0% |
| Candidate M | 0% |
| Candidate N | 0% |
| Candidate O | 0% |
| Other | 0% |
Market context
Wyoming's Republican gubernatorial primary will determine the party's nominee for the 2026 general election, with the contest scheduled for 18 August 2026. The current 78% implied probability for a Republican primary winner reflects high confidence that the race will proceed as scheduled and that a clear victor will emerge from the field. This probability also embeds assumptions about candidate participation, voter turnout, and the absence of extraordinary circumstances that might delay or cancel the primary altogether.
Wyoming's recent gubernatorial history offers useful calibration. In 2022, Mark Gordon won the Republican primary with approximately 40% of the vote in a multi-candidate field, then secured the general election comfortably. That race saw meaningful competition but resolved without runoff provisions or extended dispute. The state's Republican primary electorate is relatively stable and concentrated; turnout typically ranges between 60,000 and 80,000 voters. The 78% figure suggests traders are pricing in modest uncertainty around candidate emergence, potential late withdrawals, or unforeseen procedural complications rather than fundamental doubt about whether a primary occurs.
Traders should monitor candidate announcements throughout 2025 and early 2026, particularly any declarations from sitting state officials or figures with established fundraising networks. Wyoming's filing deadlines and ballot access requirements typically crystallise in the spring preceding the August primary. For programmatic approaches, conditional orders tracking candidate entry announcements or polling aggregates would help automate position adjustments as the field solidifies. The Wyoming Republican Party's official results announcement will serve as the binding resolution trigger, making direct monitoring of their communications channels essential for settlement verification.
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
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Wyoming Governor Republican Primary Winner on Polymarket Review UK
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