Here is an interesting Podcast from Amanda Farmer (a specialist strata lawyer from Your Strata Property) regarding the issue of electronic voting:
https://www.yourstrataproperty.com.au/106-resolving-the-confusion-around-electronic-voting/
There are companies that assist in the setting up of electronic voting for your strata scheme e.g. Stratabox.
There are both benefits and pitfalls of electronic voting.
As a Queenslander who has never voted any other way, (even though I still turn up to AGMs when I am able) I find electronic voting, via emailing back the completed voting form prior to the AGM, to be a way of including all owners, even those that do not live in the area.
Qld has many owners from interstate and overseas who would not ordinarily be able to attend an AGM and cast a vote in person.
As a comparison between Qld and NSW, I have provided a link below to the Qld system for nominating Committee members. Nominating and voting for a Committee is a well organised and simple system and one that NSW may consider adopting one day.