PM Starmer's resignation date brought forward by 1 day to 22 Sept 2026
·implied p50 shift
Briefing
Prime Minister Keir Starmer's resignation date has been moved forward by 1 day to 22 September 2026, according to the latest Polymarket betting data. The previous expected resignation date was 23 September 2026.
The shift in the implied resignation date suggests the market sees an increased likelihood of Starmer stepping down as Prime Minister before the end of September 2026.