Australia is divided into areas called electoral divisions. Voters in each electoral division cast a vote to elect one person (a Member of Parliament) to represent them in the House of Representatives.
Voters in each state and territory elect Senators to represent them in the Senate. States have 12 Senators and the Australian Capital Territory and the Northern Territory each have 2 Senators.
At a referendum, you will receive a ballot paper with the proposed alteration to the Constitution.