Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Dan Green | 100% |
| Marcus Carter | 0% |
| Thomas Chalifoux | 0% |
| Jorge Malavet | 0% |
| Howard Steven Rance | 0% |
| Justin Story | 0% |
| Ben Butler | 0% |
| Jorge Martinez | 0% |
| Steve Rance | 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
Florida's 9th congressional district will hold a Republican primary on 18 August 2026 to select the party's nominee for the U.S. House seat in that year's midterm elections. The 0% implied probability currently reflected in this market suggests either no candidate has yet declared or the market lacks sufficient liquidity to price meaningful uncertainty. This district, which encompasses parts of Orange County and Osceola County in the Orlando metropolitan area, has shifted considerably in recent election cycles, making the identity of the Republican nominee potentially consequential for November's general election outcome.
The historical pattern of Florida Republican primaries shows that early frontrunners often consolidate support substantially once filing deadlines approach, particularly in districts without an incumbent seeking re-election. The 2024 cycle demonstrated that even in competitive districts, the eventual Republican nominee frequently emerges with relative clarity by midsummer. However, late entrants and candidate withdrawals have occasionally reshaped Florida primary races within weeks of the election date, suggesting that current market pricing may not yet reflect the full candidate field.
Traders should monitor the Florida Division of Elections filing deadlines and any announcements from sitting state legislators or local Republican officials indicating their intention to run. Recent reporting on Florida's 2026 congressional races has been sparse, but the Republican Party of Florida's candidate recruitment efforts typically intensify in spring 2026. Any announcement by a well-funded or locally prominent candidate would likely trigger significant repricing of this market, particularly if multiple credible contenders emerge simultaneously.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade FL-09 Republican Primary Winner on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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