Starmer Out By May 31, 2026? Probability Jumps 15% on Polymarket

Market Probability Shift

The market question regarding Keir Starmer's potential departure by May 31, 2026, has experienced a notable probability shift. Over the past 6 hours, the probability of this outcome has increased by 15.3 percentage points, moving from an unspecified prior level to the current 30.4%. The market's current assessment suggests a 30.4% chance that Starmer will no longer be leader of the Labour party by the specified date.

The data indicates no trading volume or new trades within the last 24 hours, nor any whale activity. The resolution date for this market is set for June 30, 2026.

What to Watch

Market participants will be monitoring any public statements or political developments concerning the leadership of the Labour party and potential shifts in political momentum. The probability in this market is a direct reflection of the aggregated belief of traders based on available information and sentiment.

Understanding Prediction Markets

Prediction markets, like Polymarket, aggregate the beliefs of traders into probabilities. A probability of 30.4% means that, based on current trading, the market assigns a 30.4% likelihood to the event occurring. These probabilities are dynamic and can change rapidly based on new information or shifts in sentiment. They are not forecasts but rather a reflection of the current market consensus. The market resolves to 'Yes' if Keir Starmer is no longer the leader of the Labour Party on or before May 31, 2026. Otherwise, it resolves to 'No'.