Wollongong's early voting booth opened on Monday, allowing Cunningham and Throsby constituents who are unable to make it to a polling place on September 7 to cast their votes.
Centres in Dapto, Bowral and Warilla are also open until 6pm on September 6.
Early voting is available for people who are travelling, working, seriously ill, due to give birth or will be outside their electorate on polling day.
Those with religious beliefs that prevent them from attending, are in prison serving a sentence of less than three years, or have reasonable fears for their safety, can also vote early.
For information on booth locations, visit the Australian Electoral Commission at aec.gov.au.