The Chief Electoral Office has begun recounting the 2.3 million votes cast on election day, as well as special votes.
The office says election night figures are officially classed as preliminary results and it began recounting all of them on Sunday. The process will take about two weeks.
Each vote is re-checked to ensure the voter's intention is clear and then recounted.
Returning officers are also scrutinising the rolls for any voters who appear to have voted more than once.
Counting of an estimated 240,000 special declaration votes, including an estimated 32,000 overseas votes, also began on Sunday.
The office aims to declare the official election results at 2pm on 22 November.
Polling day 'smooth'
The office says it received a few complaints from polling booths around the country on election day, but overall things went smoothly on a very busy day.
Chief electoral officer Robert Peden says many of the complaints were about things which are legal but people find annoying, such as scrutineers wearing party rosettes in polling places or a party organisation ringing up voters to see if they had voted.
But he says there were a few grumbles about campaign material still being up, which are under investigation.
He described the complaints as the usual sort on election day, and attributed the mostly troublesome-free polling to effective education campaigns.
The provisional voter turnout this year was 78.69%, based on the number of eligible voters who enrolled by 5pm on Friday evening.
