Streeting accused the premier of lacking the vision to lead the party into the next general election. Greater Manchester Mayor Andy Burnham has emerged as a leading potential challenger for the role of Labour leader, but his route to the top job is complicated. Under the party’s rules, he would first need to return to parliament, meaning he must win selection for a vacant seat and then defeat the right-wing Reform UK in a by-election. The turmoil comes as Nigel Farage’s Reform UK party continues to gain ground in opinion polls. Other possible Labour contenders include Streeting, former deputy prime minister Angela Rayner, and Energy Secretary Ed Miliband, a former party leader.