Nominations opened on 21/6/23 and must reach the Returning Officer, Ben Murray no later than 5:00pm (AEST) on 5/7/23.  This means that you can’t put the nomination in the mail at 4:00pm on 5/7/23, but you can lodge a nomination via email.  If you choose to post your form, it is the your responsibility to ensure that it reaches the AEC before the deadline.
Please note, the AEC’s spam filter blocking your emailed nomination form isn’t a good enough reason for late submission.