Who is Keir Starmer, set to be the new U.K. prime minister after the Labour Party’s election landslide? CBS NewsRishi Sunak resigns as Tory leader as well as PM after election defeat The GuardianLabour Party Wins UK Election: Live Updates, Results and Latest News The New York TimesUK election live updates: Sunak resigns as prime minister The Associated Press‘I am sorry:’ Rishi Sunak on election loss CNN