Australia operates as a federal parliamentary democratic constitutional monarchy, with the monarch, currently King Charles III, as the head of state.
Generally, state constitutions establish a system of responsible government, where the executive is accountable to the legislative branch.
They are not truly sovereign legislatures however, as laws passed by Australia's state parliaments are subject to the federal constitution.
Generally, amendments require a majority vote in both houses of parliament, and sometimes approval through a state-wide referendum.
Constitutional reform and amendments at the State level have been a source of discussion for legal scholars, politicians, and the general public.