Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
62% | 38% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
62% | 38% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Lisa Demuth | 62% |
| Mike Lindell | 36% |
| Kendall Qualls | 1% |
| Scott Jensen | 0% |
| Jeff Johnson | 0% |
| Patrick Knight | 0% |
| Brad Kohler | 0% |
| Chris Madel | 0% |
| Phil Parrish | 0% |
| Kristin Robbins | 0% |
| Other | 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% |
| Candidate P | 0% |
| Candidate Q | 0% |
| Candidate R | 0% |
| Candidate S | 0% |
| Candidate T | 0% |
| Candidate U | 0% |
| Candidate V | 0% |
| Candidate W | 0% |
| Candidate X | 0% |
| Candidate Y | 0% |
| Candidate Z | 0% |
Market context
Minnesota’s Republican gubernatorial primary is the vote that will choose the party’s nominee for governor, with ballots already cast by mail or in person and the main election scheduled for 11 August. The field has been unusually crowded for a gubernatorial primary, but recent coverage has consistently centred on Lisa Demuth, Kendall Qualls and Mike Lindell as the main contenders, with a seven-candidate ballot giving late movement and turnout dispersion outsized importance.[2][4][9][17]
The current 62% implied probability for a specific winner should be read against a genuinely split race rather than a settled favourite. The February GOP caucus straw poll put Demuth first at about 32%, with Qualls on 25% and Lindell on 18%, while later public polling has shifted towards Lindell in at least one recent survey and kept Demuth and Qualls close enough that small turnout differences could matter.[3][7][8] In a market like this, that often means the price is less a read on certainty than on whether one camp can convert its organisational edge into actual primary votes.
The main catalysts are the final turnout signals, any last-minute campaign announcements, and the first official result call from the Minnesota Republican Party, which is the market’s stated resolution source.[4][17] Because settlement is in USDC on-chain, traders are also likely to watch broader crypto risk conditions into the close: if BTC and ETH move sharply, or if exchange funding and whale flows tilt risk sentiment, that can affect intraday liquidity even when the election thesis itself is unchanged. The practical hinge remains whether any credible late reporting before 11 August points to a clear plurality, or whether the race stays close enough that the first party announcement matters most.[4][17]
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- 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 Minnesota Governor Republican Primary Winner on BTC Prediction
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