There were 15,199 votes cast in advance which is 72.6 per cent of all votes.
Voter turnout was 40.5 per cent of the 51,706 people enrolled. The turnout was similar to recent by-elections in Northcote (43.9 per cent) Mt Albert (30 per cent) and Mt Roskill (38.5 per cent).
The Electoral Commission expected to return the writ showing the successful candidate on Thursday assuming there were no recounts, it said.
Official vote tally
National Party's Sam Uffindell: 11,613
Labour Party's Jan Tinetti: 5259
Act New Zealand's Cameron Luxton: 2133
NZ Outdoors & Freedom Party's Sue Grey: 1030
New Nation Party's Andrew Hollis: 260
ONE Party's Allan Cawood: 182
Aotearoa Legalise Cannabis Party's Christopher Coker: 117
New Conservative's Helen Houghton: 103
Independent candidate Peter Wakeman: 22
Independent candidate Yvette Lamare: 20
Independent candidate Tony Corbett: 17
Independent candidate Gordon Dickson: 9
Candidate informals: 19
Total: 20,784