Shadow Cabinet of Margaret Thatcher Cabinet ceased to exist upon her becoming Prime Minister following the 1979 general election. Thatcher announced her first Shadow Cabinet on 18 February 1975. On 15 January 1976, Thatcher reshuffled the Shadow Cabinet. Pym returned as Shadow Agriculture Minister, displacing Jopling. George Younger was dropped from the front bench, and he was replaced by Gilmour at Defence; Whitelaw, the Deputy Leader, added Gilmour's Home Affairs portfolio to his Devolution. John Biffen replaced Jenkin as Shadow Energy Secretary, and Jenkin took Health from Fowler, who was demoted to be a Shadow Transport Minister (which was not in Shadow Cabinet and was
Premiership of Margaret Thatcher her opposition to greater economic integration into the European Community. She also alienated many Conservative voters and Members of Parliament with the imposition of the local poll tax. As her support fell away, she was challenged for the party leadership and persuaded by her Cabinet to withdraw from the second round of voting, ending her eleven-year tenure as Prime Minister. Though she remains a domestically polarising figure, historians and political scientists generally rank Thatcher as an above-average Prime Minister. Biographer John Campbell reports that in July 1978 when asked by a Labour MP in Commons what she meant by socialism: