Resolution criteria on PolyGram: This market will resolve to "Yes" if a leadership election for the UK-wide Leader of the Labour Party is scheduled by the specified date, ET. Otherwise, this market will resolve to "No". This market is about whether a date for any Labour Party leadership election is announced within this market's timeframe. Whether the election is supposed to take place within this market's timeframe or later will have no effect on the resolution to this market. The resolution source for this market will be official information from the Labour Party, however a consensus of credible reporting may be used.
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
| December 31 | 0% YES | 100% NO |
| March 31 | 0% YES | 100% NO |
| June 30 | 62% YES | 38% NO |
A Labour Party leadership election would be triggered by either the resignation of the current leader or a formal challenge under party rules. Sir Keir Starmer became Labour leader in April 2024 and currently leads a government with a substantial parliamentary majority following the July 2024 general election. The market settles on whether a leadership election date is merely announced by 30 June 2026, regardless of when any actual election would occur.
Historical precedent suggests Labour leadership transitions occur infrequently outside of electoral defeat. Jeremy Corbyn faced a challenge in 2016 but retained the leadership; Ed Miliband stepped down immediately after the 2015 election loss; Gordon Brown announced his resignation in May 2010 following electoral defeat. The 0% implied probability on Polymarket's order book reflects the current political stability—Starmer faces no significant internal party challenge and retains broad backbench support. A leadership election announcement within eighteen months would require either unexpected resignation or a dramatic shift in party dynamics.
Traders should monitor Labour's polling trajectory and any signs of internal dissent, though near-term catalysts appear limited. Party conference speeches, by-election results, and any major policy reversals could shift sentiment. The settlement window extends through mid-2026, capturing the period before any potential 2029 general election cycle, meaning a scheduled leadership election would signal genuine crisis rather than routine succession planning. Current market pricing reflects the baseline expectation of continued Starmer leadership absent unforeseen circumstances.
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 "Labour leadership election scheduled by ...?" are the same as any other PolyGram political 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.
$64K in lifetime turnover and $15K of resting liquidity puts this market in the around the median by volume for politics contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
Last 24 hours alone saw $31 in turnover, consistent with the market's lifetime daily-average pace.
The market has been open for 6 months — the price has had time to stabilise as new information arrived.
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.
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 30 June 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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