 A big win for Britain's Labour Party. 10 Downing Street with a new resident. Labour's Keir Starmer, now British Prime Minister, defeating the Conservative Party in a historic landslide. We did it! Winning a staggering 412 of the 650-seat Parliament. Starmer then heading to the Palace, where the King asked him to form a new government. He's Britain's 58th Prime Minister and Charles' third. ABC's James Longman. Two teenagers have died after being pulled from the water at New York's Coney Island beach Friday. Another swimmer is missing.