Redistribution (Australia)
Section 24 of the Constitution of Australia requires that the total number of members of the Australian House of Representatives shall be "as nearly as practicable" twice as many as the number of members of the Australian Senate. There is presently a total of 76 senators: 12 senators from each of the six states and two from each of the two autonomous internal territories (the Australian Capital Territory and the Northern Territory). There are 150 members of the Australian House of Representatives.
Parliament of Western Australia
Currently, the Legislative Council has 36 members elected for four-year terms from multi-member constituencies by proportional representation, and the Legislative Assembly has 59 members, elected for four-year terms from single-member constituencies, using preferential voting. As with all other Australian states and territories, enrolment to vote and voting for both Houses is compulsory for all resident Australian citizens—and eligible British citizens (i.e., those permanently resident and on the electoral roll prior to the passage of the Australia Act)—who are over the legal voting age of 18.