According to the NSW Electoral Commission you are eligible to vote through casting a pre-poll vote if you meet one of the following citeria:
will be outside your ward or council area on election day
will be more than 8km from a voting centre (polling place) in your ward or council area on election day
will be travelling and unable to attend a voting centre on election day
are seriously ill or infirm, and due to such illness or infirmity will be unable to attend a voting centre
are approaching maternity
have religious membership or beliefs that prevent you from attending a voting centre on election day
are in a correctional centre and prevented from attending a voting centre on election day
are caring for a person outside of a hospital setting, which prevents you from attending a voting centre on election day
will be working on election day
are a silent elector
are a person with a disability
believe that attending a voting centre on election day will place your personal safety or the safety of your family at risk.