The date by which Prime Minister Keir Starmer is expected to resign has shifted 2 days earlier, from 12 September 2026 to 10 September 2026, according to the latest Polymarket betting data.
The change in the implied resignation date comes as markets price in a growing likelihood of Starmer stepping down as Labour leader and PM in the coming months. The shift suggests increased confidence among traders that Starmer's tenure may be shorter than previously expected.