The above graph was posted by Antony Green. He agrees that it is a statistical anomaly.
Like I said above. If you need a vaccination certificate to have a job, got the pub and photo ID to collect a parcel from Auspost, or attend a licenced venue. You should need one to vote.
If you don't have one, then a declaration vote is undertaken, as to not disadvantage someone.
p.s I suspect you will be surprised at the next election.. This has the hallmarks of 2019 all over. You think the games in the bag before kick off.