Parliaments of The Australian States and Territories

The Parliaments of the Australian states and territories are legislative bodies within the federal framework of the Commonwealth of Australia. Before the formation of the Commonwealth in 1901, the six Australian colonies were self-governing, with parliaments which had come into existence at various times between 1825, when the New South Wales Legislative Council was created, to 1891, when Western Australia became the last of the colonies to gain full self-government.

By ratifying the Constitution of Australia, the colonies agreed to become States of the Commonwealth, and to cede certain of their legislative powers to the Commonwealth Parliament, but otherwise retained their self-governing status with their own parliaments. The legislative powers of the state parliaments cannot be altered except by altering the Constitution, which can only be done by the Australian people voting in a referendum.

The Australian Capital Territory and the Northern Territory, by contrast, are territories of the Commonwealth, and their parliaments were created by way of legislation of the Commonwealth Parliament. Although the Commonwealth treats the territories as though they were states for many purposes, they are not states, and the legislative powers of their parliaments can be altered or even abolished by the Commonwealth Parliament. The Commonwealth can also overturn legislation passed by the territory parliaments.

All of the States except Queensland have bicameral parliaments, with a lower house called the Legislative Assembly or House of Assembly, and an upper house called the Legislative Council. The parliaments of Queensland and the two territories are unicameral.