National and Labour are about to reveal their candidates for the Northcote by-election.
National will announce who their candidate is on Sunday afternoon and Labour is also deciding who its candidate will be.
"No matter what, we give any by-election our all," Prime Minister Jacinda Ardern told reporters on Saturday while visiting the Commonweal Games on the Gold Coast.
The by-election is being held because National's Jonathan Coleman is leaving. He won the seat with a 6200 majority in last year's election.
- National MP Jonathan Coleman resigns from politics
- National Party on hunt to fill Jonathan Coleman's seat
- Jonathan Coleman 'left behind far too many questions'
"Although National has held the seat since 2005, and won the party vote consistently since then too, we never take any election for granted and will be campaigning hard," president Peter Goodfellow has said.
Labour has a shortlist of three, including both their candidates from the last two general elections, NZME reports.
For Labour Richard Hills, a candidate in 2014 and now an Auckland councillor, is up against Shanan Halbert, the candidate in 2017. The third Labour hopeful is Paul McGreal.
For National Lisa Whyte and Danielle Grant, both of whom have experience in local body politics are in the mix along with Dan Bidois, a former student politician, former Fulbright scholar and ex-OECD economist.