Thanks for your question Lisa. An electorate is a geographical area of Australia represented by a member of parliament elected to the House of Representatives. It is also known as an electoral division, or division. There are 150 members in the House of Representatives and each of these members represents an electorate. Electorates are based on population – on average, 100 000 voters live in each electorate. You can find a list of all 150 electorates on the Australian Electoral Commission website.