Australian Communist Party v Commonwealth Australian Communist Party v Commonwealth Australian Communist Party v The Commonwealth, also known as the Communist Party Case, was a legal case in the High Court of Australia described as "undoubtedly one of the High Court's most important decisions." In a general election held on 10 December 1949, Prime Minister Robert Menzies led a Liberal-Country Party coalition to government pledged to dissolving the Communist Party of Australia. The Party had been banned before: following the Molotov-Ribbentrop Pact, the Party had opposed Australian involvement in the Second World War in 1939, which gave Menzies' United Australia Party-Country Party government the opportunity
Menzies Government (1949–66) narrowly returned against Labor's Arthur Calwell in the December 1961 election, in the midst of a credit squeeze. Menzies stood for office for the last time in the November 1963 election, again defeating Calwell, with the Coalition winning back its losses in the House of Representatives. Menzies went on to resign from parliament on 26 January 1966. Menzies' 1949 Cabinet had the leader of the Country Party, Arthur Fadden, as the Treasurer and Deputy Prime Minister and included Dame Enid Lyons as the first woman to serve in an Australian Cabinet. After winning office in 1949, Menzies fulfilled his promises