 He took charge in 10 Downing Street hours after Thursday's votes were counted as Conservative leader Rishi Sunak hustled out. With all but two of the individual election results in, Labour had won 412 seats in the 650-seat House of Commons and the Conservatives 121. That was from CBS News. The outgoing Prime Minister Rishi Sunak spoke outside the Prime Minister's residence, 10 Downing Street in London.