What is the difference between an electorate and a division?
Thanks for your question Lisa.
An electorate is also known as a division or electoral division. It is a geographical area of Australia represented by a member of parliament elected to the House of Representatives. There are 150 members in the House of Representatives and each of these members represents an electorate. Electorates are based on population; on average 120,000 voters live in each electorate.
Casting a vote for the House of Representatives

Australian Electoral Commission
Description
A voter is casting a vote in a federal election. They are placing their green House of Representatives ballot paper into the ballot box labelled 'House of Representatives'. Senate ballot papers are white and are placed into the other ballot box, labelled 'Senate'.
Permission should be sought from the Australian Electoral Commission (AEC) for third-party or commercial uses of this image. To contact the AEC email: media@aec.gov.au or phone: 13 23 26.