A person can only legally vote once they enrol to vote, and they can enrol once they turn 18. Elections take place periodically, usually every two to four years.
Voting in Australia
Voting in Australian federal and state elections is compulsory for all enrolled citizens. Voting can take place by a person attending in person at any polling place in their state on the election day or in early voting locations, or by applying for and mailing a postal vote.
Voting is almost entirely conducted by paper ballot. If more than one election takes place at the same time separate ballot papers are used. These are usually of different colours and are deposited into separate boxes.
How-to-Vote cards are usually handed out by party volunteers. They suggest how a party supporter might vote for other candidates or parties. Electors now routinely receive how-to-vote cards through the mail or other means.