You can vote in person at an early voting centre or any AEC divisional office in the weeks leading to the election. Early voting will be available from 20 August 2013.

 

or (maybe to late for this one though)

 

Apply for a postal vote

Postal vote applications can be submitted up until Thursday 5 September 2013

 

If you can't make it to a polling place in your state or territory on election day, there are options. If eligible, you can vote:

In person:
At an early voting centre
Not all early voting centres are open every day. Check the opening times before you visit.

Find your nearest early voting centre (opening dates and times vary)
Polling places with disabled access are indicated.
At an overseas voting centre
Find your nearest overseas voting centre (opening dates and times vary)
With a mobile polling team
AEC mobile polling teams visit many electors who are not able to get to a polling place. Mobile polling facilities are set up in some hospitals, nursing homes, prisons and remote areas of Australia.

Mobile polling locations, dates and times
By post:
Apply for a postal vote online
Application forms are available from any Australia Post outlet. The AEC must receive your application for a postal vote no later than 6pm Thursday 5 September 2013.

http://www.aec.gov.au/