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.
Commonwealth Electoral Act 1918
Compulsory voting at federal elections was introduced in 1924, as a condition of the Country Party agreeing to form an alliance with the then minority Nationalist Party. Compulsory voting saw voter turnout increasing from 59.36% to 91.39% at the 1925 federal election.