Makerfield by-election: Margin of Victory

Makerfield by-election: Margin of Victory is a prediction market focused on the expected winning margin in the United Kingdom parliamentary by-election for the Makerfield constituency. The by-election is expected in June 2026 after the announced resignation of incumbent Josh Simons, making this a closely watched political event in UK elections and broader election forecasting. Traders are not predicting the winner here, but the difference between the first-place and second-place candidates, measured as the absolute gap in valid vote share.

This market matters because margin-of-victory outcomes can signal how competitive the contest is and how market sentiment is pricing local political conditions. The event will resolve using the official vote count once the result is made official by Wigan Council or credible reporting consistent with official results. If results are not definitively known by December 31, 2026, the market resolves to Other.

Current market probability is around 33%, giving a sense of the present odds that the listed bracket will occur, though the forecast can change as the campaign develops and election day approaches.