A former Greater Manchester mayor cracks a Monty Python joke at the despatch box, and Westminster suddenly has a new frontrunner for prime minister. Andy Burnham’s return to Parliament after a nine-year absence has set in motion a chain of events that could see him become the UK’s seventh prime minister in a decade.
Burnham won the Makerfield by-election on 18 June 2026 with 55% of the vote, more than 20 points ahead of his Reform UK opponent Robert Kenyon. The seat in Greater Manchester had been vacated by Labour MP Josh Simons, who stood aside in May to give the party’s most popular politician a chance to enter the race for Number 10. Burnham was sworn in as an MP on 22 June, prompting good-natured heckles from opposition MPs – “He’s not the Messiah!” – to which he replied with the Monty Python line “Naughty boy”.
“Explains Andy Burnham's by-election win, his path to No 10, and what he stands for.”
Burnham’s political career spans more than two decades. He was first elected as the Labour MP for Leigh in 2001 and served in the cabinets of Tony Blair and Gordon Brown. He ran for the Labour leadership in 2010 and again in 2015, losing both times. After 2015 he became the Mayor of Greater Manchester, a role he held until his by-election win. During his time as mayor, his personal popularity grew, and he was increasingly seen as a potential rival to then-PM Keir Starmer after the Labour Party conference in September 2025.
Starmer resigned as Labour leader and prime minister on the morning of 22 June 2026, saying he accepted “with good grace” that his party no longer wanted him in charge. Hours later, Burnham confirmed he would put himself forward to replace Starmer as part of an “orderly and responsible” transition. Wes Streeting, the health secretary and a previously declared contender, withdrew from the race and backed Burnham, saying he was the right man to “deliver the change our Party and our country needs”. Burnham remains the only publicly declared candidate.
For UK voters, the shift matters because Burnham represents a dramatic change in style and substance from Starmer’s government. His by-election campaign focused on what analysts call “Brand Burnham” – a personal appeal based on being seen as someone on the side of ordinary people. He explicitly named deindustrialisation, privatisation and austerity as causes of the affordability crisis, and proposed policies including public ownership of essential utilities, a land value tax and electoral reform. These ideas had been fringe under Starmer but were central to Burnham’s pitch. In the local elections in May 2026, Reform UK won every seat in Makerfield, yet Burnham turned that around in five weeks with a campaign slogan of “for us”.
Q: Why is Andy Burnham so popular? His personal brand – built over nine years as Mayor of Greater Manchester and two leadership campaigns – is one of authenticity and connection with voters. Polls and focus groups consistently show he is seen as attuned to the concerns of ordinary people, and his by-election campaign offered a clear diagnosis of problems and a set of progressive but achievable policies.
Q: What happens after Starmer’s resignation? Labour will hold a leadership contest, but with only Burnham declared so far and key figures like Wes Streeting backing him, it could be effectively a coronation. The winner will become prime minister, making Burnham the seventh PM in ten years.
Q: What challenges would Burnham face as PM? One of his toughest tests would be handling Donald Trump, the US president. Their backgrounds could hardly be more different – Burnham is a soft-left Mancunian focused on public transport and football, while Trump is a brash billionaire. Navigating the volatile US-UK relationship would be a major early foreign policy challenge.
What happens next is a matter of days and weeks. Starmer set out a timetable for his departure on the steps of Downing Street. Burnham has been sworn in and is now the clear frontrunner. If he wins the leadership unopposed, he will become prime minister almost immediately. The coming days will show whether any other Labour MP challenges him. Beyond that, the country will watch how his ambitious policy agenda – public ownership, land value tax, electoral reform – translates from a by-election platform into government action.