The latest One News-Colmar Brunton Poll has the National Party maintaining its wide lead over the Labour Party.
National is on 54% support and Labour is on 28% in the poll, released on Thursday.
Both parties had slipped two points since the previous week's poll.
The Greens held steady on 9%.
There have been slight increases for minor parties with New Zealand First on 2.9% and the Maori Party on 2.1%.
The Conservative Party has made its first appearance on the poll at 0.5%.
The poll questioned 1000 eligible voters and has a margin of error of plus or minus 3.1%.
