Support for Labour has dipped to a ten year low with the Green Party reaping the benefit, according to the latest ONE News Colmar Brunton poll.
National's level of support seems to be barely damaged by the ongoing "tea pot tape" controversy this week.
It is down one point since last week's poll to 53%, while Labour has dropped back to 26%, its worst showing for a decade.
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The Green Party appears to be hoovering up Labour's support and is polling at a record high of 13%.
None of the other minor parties are picking up much support on the party vote, but the newly formed Conservative Party has begun to blip away on the radar, moving up to 1.4%.
New Zealand First has 2.2%, Act and the Maori Party are even on 1.6% each, Mana takes 1.3% of the party vote and United Future 0.3%.
Based on these results National could govern alone with 66 seats and based on current coalition partners, and assuming electorate seats are held, the party could add in four seats from the Maori Party, two from Act and one from United Future.
Labour has just 32 seats and while the Greens would be a significant force with 16 MPs it is not nearly enough to form a government, even adding in two seats from the Mana Party.
John Key's support as the preferred Prime Minister has not been significantly damaged by the "tea pot tape" saga either.
He has dropped back two points but still has 53% support compared with 13% for Phil Goff.
ONE News Political Editor Guyon Espiner said if anything the fall out from the secret recording of the meeting between Key and John Banks has harmed Labour.
"It has crowded Labour out of the media and the big winners are the Green Party who are on track for a record number of MPs," he said.
The poll had a margin of error of plus or minus 3.1% and was based on a sample of 1000 eligible voters.