The Prime Minister's expected resignation date has been pushed back by 2 days, from 17 August 2026 to 19 August 2026, according to the latest Polymarket data. The shift suggests Starmer is now ~86% likely to still be in office on the later date.
The move comes as the Labour leader continues to face pressure from within his own party, with the number of MPs publicly demanding his resignation now standing at a running total.