Andy Burnham's decisive victory in the Makerfield by-election has cleared the biggest hurdle in his bid to challenge Prime Minister Keir Starmer for the Labour leadership, intensifying pressure on a premier already battling rising dissent within his party.
The Greater Manchester Mayor secured nearly 55 per cent of the vote, comfortably defeating Reform UK candidate Robert Kenyon and earning a return to Westminster after almost a decade away from Parliament.
Victory strengthens Burnham’s claim as Starmer alternative
The by-election was widely seen as a crucial test for Burnham, who needed to become an MP again before he could mount a formal leadership challenge under Labour rules.
His convincing win now positions him as the strongest contender to replace Starmer, whose authority has been weakened by Labour's poor performance in recent local elections and rising criticism from within party ranks.
In his victory speech, Burnham signalled that Labour must change course, describing the result as a potential "turning point" and warning that the party had a "final chance to change."
Pressure mounts on embattled PM
Starmer congratulated Burnham on the victory, but the result is expected to deepen questions over his future. Congratulating Burnham on X (formerly Twitter), Starmer wrote. “Voters chose Labour’s campaign of hope and optimism over division and hate.”
Several Labour MPs have already called for a leadership transition, while senior figures have urged the party to consider its options after a sharp decline in public support.
Burnham's victory is particularly significant because it came against Reform UK, a party that has made major gains in Labour heartlands and is increasingly viewed as a threat to the governing party.
Attention turns to Burnham’s next move
Burnham is expected to be sworn in as an MP next week, making him eligible to launch a leadership bid. With strong backing among Labour members and support among MPs, the 56-year-old now has the platform to turn his by-election triumph into a direct challenge to Starmer's leadership.
For Starmer, the Makerfield result is more than just a by-election defeat avoided by Labour, it is a signal that his biggest political challenge may now be coming from within his own party.
