HI-01 Democratic Primary Winner

Platform comparison

Market context

The 2026 Democratic primary for Hawaii’s 1st congressional district is the nomination contest that will decide who the party’s House candidate is, and the current market reading of **0% YES** is materially out of line with the live trading and poll-based comparisons elsewhere. Recent market trackers have shown a tight two-way race rather than a locked outcome: one feed put Ed Case at 48% and Jarrett Keohokalole at 47% on the morning of 8 August, while another showed Case at 52%, Keohokalole at 51% and Della Au Belatti at 1%[11][2]. Polymarket’s contract has also been more balanced, with Case around 53% and Keohokalole around 47%, which is a sharp divergence from a zero-implied view on this contract[3].

Historically, HI-01 Democratic primaries have tended to reward the better-known and better-funded contender, but not by overwhelming margins. Ballotpedia records Ed Case defeating Cecil Hale in the 2024 Democratic primary, and current cycle coverage still treats Case as the incumbent and central reference point for comparison[6][4]. Polling and fundraising have not produced a unanimous signal: one comparison page lists Case ahead on polling average and funds raised, while local preview material has framed the contest as Case versus Keohokalole, with outside spending concentrated enough to matter but not to settle the race in advance[2][10]. That combination usually supports a live probability above the market’s present zero, even if the edge is narrow.

The key trader catalysts are simple and near-term: official Democratic and Hawaii election-result announcements from the primary itself, any late ballot or certification issues, and whether the nominee is clearly declared before the market’s November cut-off[8][9]. Because the contract resolves to the Democratic nominee as recognised by official party sources, post-primary replacement dynamics do not matter unless the nominee is not announced by the deadline. The most important comparison point is therefore whether the official count and party designation confirm a winner quickly or leave the contest effectively unresolved, in which case “Other” becomes the fallback outcome.

Sources: 1 · 2 · 3 · 4 · 5

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 UK, which mirrors the Polymarket order book directly.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

What are the best prediction markets for UK traders in 2026?

For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.