ASHTON IN MAKERFIELD, ENGLAND - JUNE 19: Manchester Mayor Andy Burnham and his wife Marie-France Van Heel are greeted by supporters at Ashton Town Football Club after his victory in yesterday's Makerfield by-election, on June 19, 2026 in Ashton in Makerfield, England. The previous Labour MP for Makerfield resigned to make way for Burnham's candidacy, setting up his return to Parliament and a potential challenge to Keir Starmer for Labour Party leadership and the premiership. (Photo by Ryan Jenkinson/Getty Images)