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 |
|---|---|
| Ed Case | 100% |
| Jennifer Booker | 0% |
| Ben Fatula | 0% |
| Jarrett Keohokalole | 0% |
| Nicholas Kiswanto | 0% |
| Candidate A | 0% |
| Candidate B | 0% |
| Candidate C | 0% |
| Candidate D | 0% |
| Candidate E | 0% |
| Candidate F | 0% |
| Other | 0% |
Market context
Polymarket prices this contract at **0% YES**, which means the market is effectively saying there is no remaining value in any outcome other than an official Democratic nominee being named for Hawaiʻi’s 1st District before settlement. On-chain, that price is expressed through USDC-backed conditional tokens on Polygon, so the position only resolves once the market’s source-of-truth checks the Democratic Party result and the nomination outcome is final under the stated rules. The real-world event is the Democratic primary for HI-01, with the seat decided separately in November, but this contract only cares about who wins the party nomination.
For context, Hawaiʻi’s 1st District has been a straight Democratic contest in recent cycles, with Ed Case winning the primary in both 2022 and 2024 according to Ballotpedia[6]. That history matters because a settled incumbent-primary environment usually compresses the range of plausible outcomes once ballots are cast, and the market’s 0% YES implies traders are treating the nomination as already functionally decided or fully priced out. Recent live election reporting also showed Case ahead in results coverage, with The New York Times listing him on 60% to Jarrett Keohokalole’s 36% as returns came in[8].
The main catalysts for a trader now are official party certification, any late-count updates, and whether the Democratic nominee is formally announced by the party sources Polymarket uses for resolution, including Democrats.org[4]. Filing and candidate-list material from Hawaiʻi election authorities confirms the primary field and timing, with the race already on the August 8 ballot[7][9]. One practical dependency is that a replacement of the nominee before election day does *not* change this market’s outcome, so the relevant trigger is the primary winner or, if no nominee is announced by the November deadline, an “Other” resolution[4].
Methodology
This page reviews HI-01 Democratic 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
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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.
Trade HI-01 Democratic Primary Winner on PolyGram
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