He subsequently continued on as prime minister at the head of the new National Labor Party, which had only 14 members out of a total of 75 in the House of Representatives. The Commonwealth Liberal Party – despite still forming the Official Opposition – provided confidence and supply until February 1917, when the two parties agree to merge and form the Nationalist Party. During the 1975 constitutional crisis, on 11 November 1975, the governor-general, Sir John Kerr, dismissed the Labor Party's Gough Whitlam as Prime Minister.