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.
1964 Australian Senate election
Elections were held on 5 December 1964 to elect members to half of the 60 seats in the Australian Senate. There was no accompanying election to the House of Representatives, as Robert Menzies had called an early House-only election the previous year. As with the previous Senate election, the Coalition held exactly half of the seats in the chamber; the Democratic Labor Party and independent senator Reg Turnbull held the balance of power.