Prime Minister Andy Burnham holds sole discretion under the Dissolution and Calling of Parliament Act to request an election at any time before the automatic dissolution deadline of 9 July 2029, which would trigger a poll no later than 15 August 2029. Burnham has repeatedly ruled out a snap contest, stating in late September 2026 that voters want delivery on policy rather than another campaign cycle and confirming the next vote will occur in 2029. Recent polling shows Labour ahead but short of a majority amid gains by Reform UK and the Greens, while a 8 October by-election in Holborn and St Pancras tested party strength without altering the timeline. Traders monitor any shift in No. 10 rhetoric or economic indicators that could prompt reconsideration of an earlier call.