LONDON — Andy Burnham, the mayor of Greater Manchester, won a special by-election for a parliamentary seat on Thursday, clearing the path for a potential leadership challenge to Prime Minister Keir Starmer, according to results and officials.
Burnham secured about 55% of the vote in Makerfield, defeating Reform UK's Robert Kenyon by more than 9,000 votes, with turnout around 59%, state media and party officials reported. The victory allows the 56-year-old politician to return to the House of Commons and meet the requirements to enter a Labour leadership contest.
Starmer responded on Friday that he would stand in any leadership race. “If there is a contest, just to be clear with you, then, yes, I will run,” he told reporters, according to multiple outlets.
Burnham, often called the “King of the North,” has been a vocal critic of aspects of the current direction and signaled his ambitions. In his victory speech, he described the result as a “final chance to change” for Labour and Britain, without directly announcing a formal challenge.
The by-election was triggered by the resignation of the previous Labour MP for the seat. Burnham stepped down as Greater Manchester mayor following the win. He previously served in cabinet roles under earlier Labour governments.
Labour has faced internal pressure amid disappointing local election results earlier in 2026. Burnham’s strong showing in a traditional Labour area highlights his personal popularity in the north despite national challenges for the party.
A senior Labour figure close to Burnham told media the priority was a managed process to avoid instability. Details of any timeline for a potential contest remained unclear on Saturday.
Starmer’s office has emphasized unity. The prime minister has not indicated he plans to step aside voluntarily.
As of Saturday, no formal leadership challenge had been lodged. Burnham is expected in London next week as the new MP. Observers said further developments could come in the coming days.
