Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Prediction Market UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Prediction Market UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Prediction Market UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Prediction Market UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Prediction Market UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Prediction Market UK → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Prediction Market UK.
Active sub-markets
| Karen Bass | 0% YES | 100% NO |
| Rick Caruso | 0% YES | 100% NO |
| Asaad Alnajjar | 0% YES | 100% NO |
| Gina Viola | 0% YES | 100% NO |
| Spencer Pratt | 1% YES | 99% NO |
| Austin Beutner | 0% YES | 100% NO |
Market context
Los Angeles will hold a mayoral election on 2 June 2026. If no single candidate wins an outright majority, the top two finishers advance to a runoff scheduled for 3 November 2026. This market resolves to whichever candidate finishes second in the initial round, determined by valid vote count. A YES share pays out if you correctly identify that second-place finisher; a NO share pays if you predict someone other than the named candidate takes that position. The current 0% probability suggests the market has not yet settled on a consensus second-place contender, or that named candidates are considered unlikely to finish in that slot.
Los Angeles mayoral races typically feature crowded primary fields. The 2022 election saw thirteen candidates compete in the first round, with Karen Bass and Rick Caruso advancing to the runoff. Second-place finishes in such contests are often determined by narrow margins between third and fourth-place contenders, making prediction difficult without clear frontrunner separation. Historical precedent suggests that once candidate fields solidify and early polling emerges, second-place positioning becomes more predictable, though surprises remain common in multi-candidate races.
Key developments to monitor include formal candidate announcements (expected throughout 2025), release of polling data, and campaign finance disclosures that signal serious contenders. The Los Angeles Times and local news outlets will track candidate declarations and fundraising activity. Endorsements from City Council members, labour unions, and established political figures often reshape race dynamics substantially. Traders should watch for any incumbent or near-incumbent status changes and shifts in voter registration patterns across the city's diverse neighbourhoods, which historically correlate with candidate viability.
Methodology
We track LA Mayoral Election: First Round Second Place? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
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
- Where can I trade this market with the lowest fees?
- On Prediction Market UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Prediction Market UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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.
- What does it cost to trade on Prediction Market UK?
- Zero. Prediction Market UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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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