18 years of age; universal and compulsory
Executive branch:
chief of state: Queen of Australia ELIZABETH II (since 6 February 1952); represented by Governor General Quentin BRYCE (since 5 September 2008)
head of government: Prime Minister Kevin RUDD (since 3 December 2007); Deputy Prime Minister Julia GILLARD (since 3 December 2007)
cabinet: prime minister nominates, from among members of Parliament, candidates who are subsequently sworn in by the governor general to serve as government ministers
elections: the monarch is hereditary; governor general appointed by the monarch on the recommendation of the prime minister; following legislative elections, the leader of the majority party or leader of a majority coalition is sworn in as prime minister by the governor general
Legislative branch:
bicameral Federal Parliament consists of the Senate (76 seats; 12 members from each of the six states and 2 from each of the two mainland territories; one-half of state members are elected every three years by popular vote to serve six-year terms while all territory members are elected every three years) and the House of Representatives (150 seats; members elected by popular preferential vote to serve terms of up to three-years; no state can have fewer than 5 representatives)
elections: Senate - last held 24 November 2007 (next to be held no later than 2010); House of Representatives - last held 24 November 2007 (next to be called no later than 2010)
election results: Senate - percent of vote by party - NA; seats by party - Liberal Party-National Party coalition 37, Australian Labor Party 32, Australian Greens 5, Family First Party 1, independent 1; House of Representatives - percent of vote by party - NA; seats by party - Australian Labor Party 83, Liberal Party 55, National Party 10, independents 2