The Prime Minister's expected resignation date has been pushed back by one day to 17 September 2026, according to the latest Polymarket betting odds. The shift comes as the market's implied probability of Starmer remaining PM on that date rises to ~86%.
The change suggests growing confidence that the Labour leader will survive the current political turbulence and continue in office. Polymarket traders have placed around £3,000 in bets on Starmer's future as PM.