1949 Australian federal election 1949 Australian federal election Federal elections were held in Australia on 10 December 1949. All 121 seats in the House of Representatives and 42 of the 60 seats in the Senate were up for election. The incumbent Labor Party, led by Prime Minister Ben Chifley, was defeated by the opposition Liberal–Country coalition under Robert Menzies. Menzies became prime minister for a second time, his first term having ended in 1941. The number of MPs in both houses had been increased at the election, and single transferable vote under a proportional voting system had been introduced in the Senate. Though Labor
Prime Minister of Australia becomes acting Prime Minister in those circumstances. Three Prime Ministers have died in office – Joseph Lyons (1939), John Curtin (1945) and Harold Holt (1967). In each of these cases, the Deputy Prime Minister (an unofficial office at the time) became an interim Prime Minister, pending an election of a new leader of the government party. In none of these cases was the interim Prime Minister successful at the subsequent election. As of , there are seven living former Australian Prime Ministers. The greatest number of living former Prime Ministers at any one time was eight. This has occurred twice: