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Australian political system

Australia is a federal parliamentary constitutional monarchy

Head of state: Governor-General Sir Peter Cosgrove

Head of government: Prime Minisher Malcolm Turnbull

Australia is a federal parliamentary constitutional monarchy with Elizabeth II at its apex as the Queen of Australia, a role that is distinct from her position as monarch of the other Commonwealth realms. The Queen is represented in Australia by the Governor-General at the federal level and by the Governors at the state level, who by convention act on the advice of her ministers.

The party with majority support in the House of Representatives forms the government and its leader becomes Prime Minister. In cases where no party has majority support, the Governor-General has the constitutional power to appoint the Prime Minister and, if necessary, dismiss one that has lost the confidence of Parliament.

There are two major political groups that usually form government, federally and in the states: the Australian Labor Party and the Coalition which is a formal grouping of the Liberal Party and its minor partner, the National Party. Within Australian political culture, the Coalition is considered centre-right and the Labor Party is considered centre-left. Independent members and several minor parties have achieved representation in Australian parliaments, mostly in upper houses.

Wikipedia’s Australian Electoral System

Wikipedia’s Instant-Runoff Voting System

Instant-runoff voting (IRV), also known as the alternative vote (AV), transferable vote, (single-seat) ranked-choice voting (RCV), or preferential voting, is a voting system used to elect a single candidate from a field of more than two candidates. It is a preferential voting system in which voters rank candidates in order of preference, rather than voting for a single candidate.

Ballots are initially counted for each elector’s top choice. If a candidate secures more than half of these votes, that candidate wins. Otherwise, whoever is in last place is eliminated from the race. On any ballot ranking this defeated candidate, all the candidates ranked behind him or her move up one ranking. The top choices on all the ballots are then counted again.

This process repeats until one candidate is the top remaining choice of a majority of the voters. When the field is reduced to two, it has become an “instant runoff” that allows a comparison of the top two candidates head-to-head.

IRV has the effect of avoiding split votes when multiple candidates earn support from like-minded voters.