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.
Apportionment (politics)
The Australian Senate is elected on a basis of equality among the States: all States elect 12 senators. Tasmania, with a population of 502,000, elects the same number of senators as New South Wales, with almost 7.1 million. This was deliberate under the Australian Constitution to protect the less populous States, without which federation would not have been agreed to, and can only be changed via a national referendum.