See my comment here. A single federal electoral roll, which is then drawn down for state and council elections, is a GODSEND. I live in two electorates and one council ward, none of which map onto each other, and some statistical program works this out for me and sends me a little card in the mail before every election.
And if it didn't, I'd give the (PAID!) person at the polling place my address (for the last council election it was 'do you live on THIS side or THIS side of the road? Right, over here) and they figure it out for me. If my nearest polling place is in another electorate, or I'm at work or I'm boarding at uni or I forgot to change my enrolment or I went on holiday or I travelled across town for shits and giggles, I walk into ANY POLLING PLACE and vote absentee. There are usually a few places (eg: Sydney town hall) where you can vote "in your electorate" for any electorate in your state.
no subject
And if it didn't, I'd give the (PAID!) person at the polling place my address (for the last council election it was 'do you live on THIS side or THIS side of the road? Right, over here) and they figure it out for me. If my nearest polling place is in another electorate, or I'm at work or I'm boarding at uni or I forgot to change my enrolment or I went on holiday or I travelled across town for shits and giggles, I walk into ANY POLLING PLACE and vote absentee. There are usually a few places (eg: Sydney town hall) where you can vote "in your electorate" for any electorate in your state.