1949 Australian federal election of Representatives was enlarged from 74 to 121 seats and the Senate from 36 members to 60 members. All 121 lower house seats, and 42 of the 60 upper house seats, were up for election. The Chifley Government was defeated, ending the longest period of Labor Federal Government in Australian history up to that date (1941–49). Labor would not return to office until 1972. Robert Menzies became Prime Minister for the second time, and the Liberal Party of Australia won government federally for the first time. 1949 Australian federal election Federal elections were held in Australia on 10 December 1949.
Deputy Prime Minister of Australia leader of the Country Party (subsequently the National Party). That continues to be case when the Coalition is in government. In the case of Labor governments, the party's deputy leader was and continues to be the Deputy Prime Minister. On 19 December 1967, John McEwen, the long-serving leader of the Country Party in the Coalition government, was sworn in as interim Prime Minister following the sudden death in office of Prime Minister Harold Holt. (There was discussion that deputy Liberal leader and Treasurer William McMahon should assume the office. McMahon had planned a party room meeting on 20 December to