Resolution criteria on PolyGram: United Kingdom local elections are currently scheduled to be held on May 7, 2026. This market will resolve to "Yes" if a Reform UK candidate wins a mayorship as a result of this election. Otherwise, this market will resolve to "No". A candidate will be considered an official candidate of Reform UK if they are officially nominated by Reform UK and are registered for the relevant election in affiliation with Reform UK. Independent candidates will not count for any party. Only the following mayoral elections scheduled to be held on May 7, 2026, will qualify for this market: Croydon, Hackney, Lewisham, Newham, Tower Hamlets, and/or Watford.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| Will Reform win a mayorship in the 2026 United Kingdom local elections? | 0% YES | 100% NO |
Reform UK will contest mayoral elections in several English councils on 7 May 2026, competing for positions that typically carry ceremonial and limited executive authority. The party has experienced significant growth in membership and electoral support since 2023, though its representation in local government remains modest. The 0% implied probability on Polymarket's order book reflects the current positioning of traders, with no meaningful volume supporting a "Yes" outcome at present.
Reform's mayoral prospects must be contextualised against its broader local election performance. The party secured representation in the 2024 local elections but remains substantially behind the Conservative Party, Labour, and the Liberal Democrats in terms of councillor numbers and established local infrastructure. Mayoral positions, which exist in a limited number of councils with directly elected mayors, represent a different electoral dynamic from ward-based contests. The party would need to win outright in at least one mayoral race—a higher threshold than gaining individual council seats.
Traders should monitor Reform's candidate announcements and campaign activity in target councils throughout 2025 and early 2026. Recent polling data on party support, local campaign spending declarations, and any significant defections from other parties to Reform could shift the probability. The party's performance in any pre-election by-elections or local campaign events will provide concrete signals about ground organisation and voter reception in specific mayoral contests. Candidate quality and local name recognition will prove decisive in these direct electoral matchups.
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.
The mechanics for trading "Will Reform win a mayorship in the 2026 United Kingdom local elections?" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$5K in lifetime turnover and $0 of resting liquidity puts this market in the below the median by volume for mayoral elections contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
As of today, traders on Polymarket price this outcome at 0%. The number updates continuously as the order book clears. PolyGram mirrors the same live odds with locale-aware formatting and USDC settlement.
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a 2-hour dispute window opens, and if uncontested the payout is final. Contested outcomes escalate to UMA token holders.
This prediction market is scheduled to close on 7 May 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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