At a victory rally in Ashton Town FC's grounds, Andy Burnham slipped away from cameras and a pursuing Sky News political editor, jogging past temporary toilets and beer garden benches. It was the start of what one commentator called a 'strange sort of interregnum' in British politics, as the newly elected MP for Makerfield avoided directly answering whether he would challenge Prime Minister Keir Starmer for the Labour leadership. But the question was no longer hypothetical: Burnham's decisive by-election victory had set the stage for a leadership contest that many in the party now consider inevitable.
Andy Burnham, the former Mayor of Greater Manchester, won the Makerfield by-election on 18 June 2026 with a majority of 9,231, nearly double that of his predecessor. He secured 54.8% of the vote, finishing about 20 percentage points ahead of Reform UK, despite Nigel Farage's party increasing its share. The result was described by Labour MP Luke Charters as 'moving political mountains'. Burnham himself called it a 'turning point' for the country. The win was especially striking because Reform had made gains in the area at local elections just a month earlier. Burnham now returns to Westminster as an MP after a nine-year absence, and his supporters believe he is the person to lead Labour into the next general election.
“Explains Andy Burnham's by-election win and the Labour leadership challenge”
The background to this by-election is a Labour government under increasing pressure. Keir Starmer, who led the party to a landslide victory in 2024, has faced growing discontent from within his own ranks over policy U-turns, a sluggish economy, and a perceived lack of direction. A leaked memo circulated by Starmer's allies warned that the party must not be seen as 'only interested in themselves, dishonest and divided' – the same criticisms that destroyed the Conservatives' reputation. But Labour MPs across factions and generations are now openly calling for Starmer to step aside. Former cabinet minister Alan Johnson told LBC: 'It's over, Keir.' Labour grandee Harriet Harman invoked Boris Johnson's resignation, saying 'the herd is moving, they are stampeding'. Transport Secretary Heidi Alexander, Energy Security Secretary Ed Miliband, and Home Secretary Shabana Mahmood have all reportedly urged Starmer to allow an orderly transition. The word increasingly used is 'coronation' – a leadership contest where Burnham would be the only candidate with the required backing of 81 MPs, thus avoiding a full ballot of party members. However, Starmer has insisted he will stand, which under Labour rules guarantees a members' vote.
For UK readers, the implications are significant. Burnham has outlined a number of policies during his campaign. He has committed to the fiscal rules set by Chancellor Rachel Reeves and to not raising the main rates of income tax, VAT or National Insurance. He has advocated bringing water companies 'back under stronger public control', using the model of Greater Manchester's bus network as an example. The government estimated nationalising the water industry alone would cost £100bn, though that figure is disputed. Burnham has also proposed replacing inheritance tax with a 'national care levy' to fund free social care, a plan he first advocated as health secretary under Gordon Brown. On immigration, he has backed the Home Secretary's reforms, though he previously expressed concerns about leaving people 'in limbo'. He has also called for greater use of detention for those with no basis for an asylum claim. Burnham has committed to keeping the triple lock on the state pension. His approach to energy and rail fares would aim to bring down costs, similar to his bus fare reductions in Greater Manchester.
Q: What is the Makerfield by-election and why did it matter? A by-election is a special election held when an MP leaves their seat between general elections. Makerfield became vacant when the previous Labour MP, Josh Simons, stood down. By-elections are often seen as a test of a government's popularity. Burnham's victory was so emphatic that it immediately triggered speculation about a leadership challenge to Keir Starmer.
Q: Who is Andy Burnham and what does he stand for? Andy Burnham is a former Labour MP and Mayor of Greater Manchester. He served as Health Secretary under Gordon Brown. He is seen as being on the soft left of the party. His key policies include stronger public control of water and energy, replacing inheritance tax with a social care levy, and sticking to current fiscal rules while seeking to reduce political turbulence.
Q: How would a Labour leadership contest work? Under Labour rules, a challenger needs the backing of 81 MPs to get on the ballot. The incumbent, Keir Starmer, is automatically on the ballot. If only one challenger reaches the threshold, it becomes a two-person contest that goes to a vote of all party members. If multiple challengers qualify, elimination ballots are held among MPs first. Burnham is expected to easily secure the 81 nominations, making him the sole challenger.
What happens next is uncertain but the next 48 hours are considered critical. Starmer faces pressure to resign from senior cabinet members. If he stays, a formal leadership contest is likely, possibly triggered by a vote of no confidence in the Parliamentary Labour Party. Burnham's campaign manager, Louise Haigh, has confirmed that a leadership campaign is ready to go. The outcome of that contest could determine the direction of the UK government, with Burnham promising a 'new path' for Britain – one that he says is 'our last chance to change'.