From the Australian Electoral Commission's website: http://www.aec.gov.au/enrol/ http://www.aec.gov.au/enrol/ -- It is compulsory by law for all eligible Aust

From the Australian Electoral Commission's website: http://www.aec.gov.au/enrol/ http://www.aec.gov.au/enrol/ -- It is compulsory by law for all eligible Australian citizens to enrol and vote in federal elections, by-elections and referendums. You are eligible to enrol if you: * are an Australian citizen, or eligible British subject, * aged 18 years and over, and * have lived at your address for at least one month.