No. The AEC checks every returned postal vote against the electoral roll. Once a person is marked off the roll with an accepted returned postal vote, any duplicate received for that enrolment record would not be accepted and the voter would be marked as an apparent multiple voter.

Rarely but it can happen. The AEC performs checks of postal vote applications against the electoral roll before sending out a postal vote pack. If two applications are the same and appear to be for a single elector, one will be discarded.

If two applications appear similar but have minor discrepancies the AEC will fulfill both applications – this is done as part of a very largescale operation and in the interests of ensuring that eligible voters do not miss out on receiving ballot papers. Erring on the side of providing a ballot paper to an applicant is a process long undertaken and completed safe in the knowledge that very strict electoral roll checks occur for completed returned postal ballot papers. The volume is low, and integrity checks are in place.

It happens rarely but can be caused by someone being a ‘general postal voter’ and then applying for a postal vote for an election or referendum with slightly different details on the application. It can also occur if two postal vote applications are completed by a person where they nominate different addresses for delivery or have slightly different spelling in the key application details.

There may also be circumstances in which the AEC may also send out a second postal vote if the person has not received their first one. All these circumstances are rare and the strict electoral roll check for returned postal ballot papers ensures only one vote per eligible voter is counted.

No. Postal voting has been administered the same way for many federal elections and for the 2023 referendum.

No. The AEC has checks to determine if the second postal vote application is valid and in most cases another postal vote pack will not be sent out.

They should complete and return one postal vote pack (postal vote certificate and ballot paper(s)) and destroy the other one. This will not result in a non-voter notice being received. Non-voter notices are drawn from the electoral roll (where we mark off who has and hasn’t voted), not the identification numbers on postal vote certificates.

In addition to strict roll checks, the postal vote application involves a security question and answer process and a legal declaration made by voters. The AEC’s counting centres operate in a secure environment where ballot papers are stored in ballot paper secure zones and tasks are performed and checked by multiple operators. All aspects of the count are open to scrutineers in what is one of the most transparent electoral processes in operation.

This is like a reference number for a specific application document. If the application is unfulfilled, that is fine. The enrolment record is the identifier the AEC uses to determine whether or not a person has voted. For postal voting, roll mark-off occurs when a completed postal vote is received by the AEC.