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Andy Burnham, the mayor of Greater Manchester, won a parliamentary seat on Friday, a vital step towards fulfilling his ambition to replace his party colleague Keir Starmer as Labour leader and Britain’s prime minister.
About a quarter of Starmer’s lawmakers have urged the prime minister to resign since his Labour Party last month suffered the heaviest local election losses of any governing party in more than three decades.
Burnham has said he would run in any leadership race, and is the frontrunner to replace Starmer. But some of his supporters are divided over how, and when, to challenge the prime minister.
Below are some of the ways that Burnham could topple Starmer:
