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.
Leader of the Government in the Senate (Australia)
The position of Leader of the Government in the Senate does not have a constitutional basis, but has existed since the first parliament in 1901 through longstanding parliamentary convention. Although it has similarities to the Senate Majority Leader in the United States and the Leader of the House of Lords in the United Kingdom, it was not based on either of those, but rather on the position of Leader of the Government in the Legislative Council found in Australia's colonial parliaments. Because government is formed in the House rather than the Senate, there is no guarantee that the Leader of the Government will be drawn from the largest party in the Senate. Unlike the Prime Minister, there is no requirement for the Leader of the Government to command the confidence of the chamber. It is not a cabinet post in its own right, and the holder of the office has always held at least one ministerial portfolio (though sometimes only the mostly honorific Vice-Presidency of the Executive Council).