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 | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
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 congressional district will hold a Republican primary on 18 August 2026 to determine the party's nominee for the U.S. House seat in that year's midterm elections. The current crowd-implied probability of 100% YES reflects near-certainty that a Republican nominee will be formally announced by the 3 November 2026 resolution deadline. This outcome is consistent with Wyoming's political structure: the state has held uninterrupted Republican primaries for its at-large seat across recent cycles, with nominees consistently emerging well ahead of the general election.
Wyoming's Republican primary history provides a reliable baseline for assessing nomination certainty. Since 2010, every at-large House primary in the state has produced a clear nominee without significant delays or contested processes that might trigger the "Other" resolution condition. The 2022 primary, won by Harriet Hageman, concluded on primary day itself with immediate party recognition. Similar patterns hold across the 2018 and 2014 cycles. The structural likelihood of a nominee announcement by early November remains high given the state's established party machinery and the absence of recent procedural complications.
Traders should monitor candidate filing deadlines and formal announcements from the Wyoming Republican Party, typically issued within days of the primary vote. The Republican National Committee's official records will serve as the binding resolution source. Any unexpected vacancy, candidate withdrawal, or party dysfunction between August and November could theoretically trigger the "Other" outcome, though such scenarios remain historically improbable in Wyoming's Republican apparatus. The 100% implied probability reflects this historical stability rather than absolute certainty of events.
Methodology
This page reviews WY-AL Republican Primary Winner across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.
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.
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.
- 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 does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
- 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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