The expected resignation date for Prime Minister Keir Starmer has been pushed back by 1 day, according to the latest Polymarket data. The market previously pointed to a ~86% chance of Starmer resigning by 20 Aug 2026, but this has now shifted to 21 Aug 2026.
The change suggests growing uncertainty around the timing of Starmer's potential departure, as the Labour leader continues to face pressure from within his own party. Polymarket traders will be closely watching for any further developments in the coming days and weeks.