Sir Keir Starmer is facing the most serious challenge of his premiership after Andy Burnham's decisive victory in the Makerfield by-election, with reports suggesting the Prime Minister may set out a resignation timetable as early as Monday. The crisis has plunged Labour into internal turmoil just two years after Starmer won a general election, raising the prospect of an early election and a new leader.
At its simplest, this is a struggle for control of the Labour Party. Andy Burnham, the former Health Secretary and now MP for Makerfield after his by-election win, is seen as the leading challenger to Sir Keir Starmer. The by-election in Makerfield—a collection of suburbs and former pit villages near Wigan—was called after the sitting Labour MP stood down. Burnham won comfortably, defeating Reform UK's candidate, a local plumber who was hampered by a poor performance on Question Time. The victory was notable because Burnham assembled a coalition of urban progressives and soft-Conservative and Reform-leaning voters, showing that Labour can still win in post-industrial areas that have drifted rightward.
“Explains the Labour leadership crisis after Andy Burnham's by-election win, with Starmer facing resignation calls.”
But Burnham's win was also a direct challenge to Starmer's leadership. Within days, over 100 Labour MPs called for Starmer to quit. Cabinet ministers, including Transport Secretary Heidi Alexander, told him privately he should set out a timetable to step down. Burnham's team urged ministers not to resign but to tell Starmer he must go. Downing Street initially denied reports that Starmer would announce a resignation timetable, and the Prime Minister insisted he would not “walk away”, warning against “plunging our party and our country into chaos”. He has prepared a leadership campaign war chest of over £100,000 and asked cabinet ministers to submit reports on their achievements, signalling his intent to fight.
The background to this crisis lies in Labour's struggles to hold together its traditional coalition. In 2024, the party lost many working-class voters to Reform UK, whose vote was described as “basically unstable”, combining nostalgic ex-Labour voters and former Tories. Starmer's opponents argue he has failed to reconnect with these voters, while his allies say ousting him would play into the hands of the right-wing press. Burnham's camp hopes Starmer will “come to his senses” over the weekend and go voluntarily, avoiding a messy contest.
For UK readers, the stakes are high. A change of Labour leader could mean a new Prime Minister without a general election, but Burnham's team has hinted he would call an early election—putting Labour MPs with small majorities at risk. The outcome will also shape policy on issues like immigration, English identity, and the government's response to Reform's rise. The crisis highlights deeper questions about who Labour represents and whether it can win back voters in the North of England.
Q: Who is Andy Burnham and why is he challenging Keir Starmer? Andy Burnham is the Labour MP for Makerfield, having won the seat in a by-election in June 2026. He previously served as Health Secretary under Gordon Brown and is a former Greater Manchester mayor. He is challenging Starmer because he believes the party needs a new direction to reconnect with working-class voters lost to Reform UK.
Q: What is the Makerfield by-election and why does it matter? Makerfield is a constituency near Wigan in Greater Manchester, traditionally Labour but trending rightward. Burnham's victory there—against a weak Reform candidate—showed he could rebuild Labour's coalition. The by-election triggered the leadership crisis because it gave Burnham a platform to challenge Starmer directly.
Q: Could there be an early general election if Starmer resigns? Possibly. Burnham's allies have warned that he would call an early general election if he becomes leader, which would put many Labour MPs—especially those with small majorities—at risk of losing their seats. However, no firm decision has been made, and the timing depends on how the leadership contest unfolds.
What happens next is uncertain. The weekend is seen as a “grace period” for Starmer to decide. If he refuses to go, Burnham may launch a formal leadership challenge. A contest would likely be messy, with the party divided between Starmer loyalists and Burnham supporters. The outcome will determine not just who leads Labour, but what kind of party it becomes—and whether it can win the next general election.