Politics latest: Starmer resigns as prime minister Andy Burnham, who became an MP on 19 June after winning the Makerfield by-election, is looking likely to be crowned leader without any other contenders. Key dates and how a Labour leadership contest works Labour's ruling body has yet to formally confirm the timetable. But Sir Keir has said he would like nominations to open on 9 July - a day after the NATO summit, which he looks likely to attend.