Menzies Government (1939–41) in December 1944. The formation of a new party – the Liberal Party of Australia – was formally announced at Sydney Town Hall on 31 August 1945. After an initial loss to Labor at the 1946 election, Menzies led the Liberals to victory at the 1949 election against the incumbent Labor government led by Ben Chifley, and the Coalition stayed in office for a record 23 years. Menzies Government (1939–41) The Menzies Government (1939–1941) refers to the federal executive government of Australia led by Prime Minister Robert Menzies. Menzies led the United Australia Party in the Australian Parliament from 1939–1941.
Prime Minister of Portugal was sworn in on 24 September 1834, as "Presidente do Conselho de Ministros" (President of the Council of Ministers). In 1911, the official title of the prime minister became "Presidente do Ministério" (President of the Ministry). In 1933, it became again "Presidente do Conselho de Ministros". The present title "Primeiro-Ministro" (Prime Minister), attributed to the head of the Government of Portugal, was officially established by the Constitution of 1976 after the revolution of 25 April 1974 The incumbent Prime Minister of Portugal is António Costa, who took office on 26 November 2015 as the 13th Prime Minister of the Third