Federal electorates need to contain a certain number of enrolled voters so they can’t just be divided into towns. They can cover several towns and suburbs with the larger regional ones often spanning across hundreds of kilometres, so you can’t just name them by the places within them when there could be 10 or more suburbs in one. Each electorate gets a representative in a seat in parliament so they are also called seats.
Response to Wally, The Adorable Little Orphaned Lamb:
They aren’t German Sheps, they are Aussie cattle dogs. fyi.