Compulsory voting
Compulsory voting is an effect of laws which require eligible citizens to register and vote in elections, and may impose penalties on those who fail to do so. , 22 countries provide for compulsory voting, and 11 democracies — about 5% of all United Nations members — enforce it.
Electoral system of Australia
Compulsory voting was introduced for the Queensland state election in 1915, for federal elections since the 1925 federal election, and Victoria introduced it for the Legislative Assembly at the 1927 state election and for Legislative Council elections in 1935. New South Wales and Tasmania introduced compulsory voting in 1928, Western Australia in 1936 and South Australia in 1942.