The latest poll has Labour on top with 43 percent compared to National's 39 percent.
The 1 News Colmar Brunton poll, released this evening, has National down 2 percentage points on the previous poll, while Labour has remained steady.
New Zealand First is up 1 point to 9 percent, and remains in prime position to help either Labour or National across the line.
The Greens are on 5 percent, sitting just on the threshold needed to return to parliament.
The Māori Party is on 2 percent, so if it wins a seat it can bring somebody in off the list.
If David Seymour wins Epsom, he will be ACT's sole MP, with the party registering just 0.1 percent of the party vote.
TOP is on 1 percent.