Premiership of Margaret Thatcher the June 1983 general election, the Conservatives won 42.4% of the vote, the Labour Party 27.6% and the Alliance 25.4% of the vote. Though the gap between Labour and the Alliance was narrow in terms of votes, the Alliance vote was scattered and they won only a fraction of the seats that Labour held, with its concentrated base. The Conservatives' share of the vote fell slightly (1.5%) since 1979. Labour's vote had fallen by far more (9.3%) and the Conservatives now had an overall majority of 144 MPs. Thatcher was Prime Minister during what "The Guardian" described as "the worst
Third Thatcher ministry European Community. On 14 November, former cabinet minister Michael Heseltine challenged Thatcher's leadership. Thatcher polled higher than him in the first round of the leadership contest, but failed to gain an outright victory in the first round of voting. Within minutes of the result being announced, Thatcher informed reporters that she intended to let her name go forward for the second ballot. However, on 22 November, before a second round of the contest could take place, Margaret Thatcher announced her resignation as Prime Minister and Leader of the Conservative Party after more than 11 years, explaining that she was resigning