President of the Senate (Australia)
The position is provided for by Section 17 of the Constitution of Australia. The Senate elects one of its members as president at the start of each new term, or whenever the position is vacant. This is usually—though not necessarily—a member of the party or coalition that holds the most seats in the Senate. The largest party in the Senate is not always the governing party, as government is determined by the House of Representatives. The President of the Senate and the Speaker of the House of Representatives may consequently be from different parties.
1975 Australian constitutional crisis
As in most Westminster system parliaments, Australia's government is ordinarily formed by the party enjoying the confidence of the lower House of Parliament, the House of Representatives. However, Australia's Parliament also has a powerful upper house, the Senate, which must pass any legislation initiated by the House of Representatives if it is to become law. The composition of the Senate, in which each state has an equal number of senators regardless of that state's population, was originally designed to attract the Australian colonies into one Federation. The Constitution forbids the Senate to originate or amend a money bill, but places no limitation on the Senate's ability to defeat one. In 1970, Gough Whitlam, as Leader of the Opposition, had stated of a budget bill, "Let me make it clear at the outset that our opposition to this Budget is no mere formality. We intend to press our opposition by all available means on all related measures in both Houses. If the motion is defeated, we will vote against the Bills here and in the Senate. Our purpose is to destroy this Budget and destroy the Government which has sponsored it."