Official results from the Mana by-election released today confirmed Labour's Kris Faafoi won, by 1406 votes, up from 1080 votes in the provisional result.
The Electoral Commission said 54.72% of the 43,556 people enrolled to vote in the November 20 by-election actually did so.
Mr Faafoi got 10,980 votes, with National MP Hekia Parata closest runner up with 9574.
Provisional results on election night had Mr Faafoi with 10,397 votes and Ms Parata with 9317.
In the 2008 general election, Ms Parata ran against former Labour MP Winnie Laban who held the seat with a 6155 majority.
The deadline for a recount of the votes is Monday. A return of writ naming the successful candidate would be issued next Tuesday, if no recount was called for.
Mr Faafoi was expected to be sworn into Parliament on December 14.
The official results released today were a recount of all votes cast on election night and special votes. The votes were also checked for eligibility.
Official results:
* Kelly Buchanan, Alliance, 37
* Julian Lloyd Crawford, Aotearoa Legalist Cannabis Party, 112
* Colin Du Plessis, Act, 136
* Kris Faafoi, Labour, 10,980
* Sean Fitzpatrick, Libertarianz, 46
* Jan Logie, Greens, 1543
* Matt McCarten, Independent, 849
* Hekia Parata, National, 9574