Andy Burnham landslide sparks Labour leadership crisis for Starmer

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8 days · 11 summary articles
Keir Starmer faced an existential threat to his premiership on Friday after Andy Burnham’s landslide victory in the Makerfield by-election, which political allies now describe as a de facto referendum on the prime minister’s leadership. Burnham, the outgoing Greater Manchester mayor, secured nearly 25,000 votes on Thursday—beating Reform UK by more than 9,000—to become Labour’s newest MP and the clear frontrunner to replace Starmer as party leader and prime minister .
A clear majority of Starmer’s cabinet now believe Burnham’s rise is “inevitable,” according to people familiar with the thinking of more than 15 ministers, though most remain reluctant to force the prime minister out immediately . Burnham’s allies have already begun pressing for Starmer to set a timetable for his departure, with some suggesting a handover as early as September . Starmer, however, has refused to yield, telling reporters on Friday that he would “fight any challenge” and insisting he is not walking away .
The political earthquake in Makerfield—a constituency Labour had held since 1991—underscores the depth of discontent within Starmer’s party. Burnham’s victory was achieved by distancing himself from national Labour branding and focusing on local issues, a strategy that saw him outperform Reform UK in a seat analysts had warned could signal broader electoral trouble for the government . French newspaper *Le Monde* described Burnham as “more than ever” the likely successor to Starmer, while *Politico* framed the result as a “bleak future” for a prime minister now facing mutiny in his own ranks .
The coming days will determine whether Starmer’s cabinet will act to force his resignation or allow him to cling to power amid growing instability. Some ministers are reportedly waiting to see if Burnham’s momentum stalls, while others argue the party needs a leadership contest rather than a “coronation” . For now, Starmer remains defiant, but the pressure is mounting—and the clock is ticking.
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