LONDON — A prime minister who commands his party does not need to threaten it. That is the cruel arithmetic hanging over Keir Starmer’s latest move, a plan to tell his remaining ministers that supporting Andy Burnham’s leadership ambitions means resigning from the government, reported by the Financial Times on Tuesday. The ultimatum is the act of a leader enforcing discipline. It is also the act of a leader who has run out of other tools.
The timing explains the urgency. On June 18, the voters of Makerfield, a Labour seat in Greater Manchester vacated by Josh Simons, will decide whether Burnham returns to the House of Commons, the one credential the Greater Manchester mayor needs to contest the leadership. Burnham stopped pretending last week. If elected, he said, he would seek to represent his voters at the highest possible level, and if a contest is running, he would seek to join it.
The contest he is describing already half exists. By the middle of last month, more than 95 Labour MPs had publicly called on Starmer to resign or name a departure date. The health secretary, Wes Streeting, quit the cabinet in May, writing that remaining would have been dishonourable and unprincipled. Four junior ministers followed, among them the safeguarding minister Jess Phillips, along with a string of parliamentary aides. What Starmer is now threatening to take from ministers, in other words, is something a meaningful piece of his government has already surrendered voluntarily.
The collapse has been gathering for months. Last month’s local elections left Labour at a projected 17 percent of the vote, level with the Conservatives and far behind Reform UK, costing the party control of 35 councils and roughly 1,500 councillors. Starmer’s personal ratings have made him, by some measures, the least popular prime minister since reliable polling began, less than two years after a landslide. The cost-of-living squeeze that did so much of that damage tightened again this summer as energy bills jumped with the Iran war, and the political bill has come due inside his own party.
Downing Street’s public answer has been to keep governing and refuse the question. The country wants government, not internal leadership debates, Starmer’s spokesman said after Burnham declared his hand, insisting the prime minister would not abandon his mandate. The line is true as far as it goes. It also describes precisely the problem: a government legislating busily, on hostile-state proxies and much else, while the party carrying it through the lobbies argues about who should lead it.
The ultimatum’s logic is conventional. Collective responsibility has always meant ministers do not campaign against their own prime minister, and Starmer is entitled to enforce it. The difficulty is what enforcement now invites. A minister who believes the government is finished under its current leader can comply by resigning, joining Streeting on the back benches with clean hands and a free voice. The threat deters only those who want to keep their jobs more than they want a new leader, and the past month suggests that category is shrinking.
Burnham’s path runs through a constituency that is itself a warning. Makerfield is the kind of northern seat Labour built a century on, and the polling there, reported by The National, has Burnham at 49 percent with Reform UK’s candidate at 39, a ten-point race in a seat that should not be close. The mayor is simultaneously Labour’s insurgent and its firewall, the man running against the prime minister and the only name keeping Nigel Farage’s party out of another heartland seat.
That doubleness is what makes the next eight days so combustible. If Burnham wins big, he arrives in Westminster with a fresh mandate, a long lead over the prime minister in party polling, and a claim that he, not Starmer, can hold the northern wall against Reform. If he wins narrowly, or loses, the insurgency deflates overnight and Starmer’s ultimatum will look prescient. Either way, the by-election Starmer cannot control has become the referendum on his leadership he refused to grant.
What the ultimatum does not address is the ground the crisis grows from. The MPs demanding a timetable are not mostly Burnham loyalists; they are members watching Reform consolidate the votes Labour lost, in seats many of them will defend in three years. Disciplining the cabinet changes none of that arithmetic. It answers a political problem with a procedural weapon, which is how leaders behave when the political weapons are spent.
There are things this story does not yet contain. No minister has said publicly that they would defy the instruction, and none has confirmed receiving it. The mechanics of any leadership challenge remain genuinely unclear, since Labour’s rules make removing a sitting prime minister difficult without his cooperation, and Burnham has not said what he would do if Starmer simply refuses to schedule a contest. Downing Street has not commented on the FT’s account.
What is no longer deniable is the shape of the thing. A prime minister with a landslide mandate is spending the second summer of his government threatening his own cabinet over a challenger who does not yet hold a seat in Parliament. The voters of one Lancashire constituency will decide on June 18 whether that challenger gets his platform. Starmer can command his ministers until then. What he can no longer command is the question.
