Labour has slumped to its worst ever result in the 1 NEWS Colmar Brunton Poll.

It's fallen three points to 24 per cent this poll. That's one per cent lower than the 25 per cent recorded at the last election. The 1 NEWS Colmar Brunton poll began in 1995.

The Greens meanwhile have surged to 15 per cent in the poll up four on earlier in the month.

This poll was taken between the 22nd and 27th of July. It's also the highest level the Greens have recorded in the 1 NEWS Colmar Brunton poll ever.

National meanwhile have remained steady on 47 per cent, while New Zealand First are also steady on 11 per cent.

The Opportunities Party is the best of the minor partys at two per cent. The Maori Party is down one percent to one.

Preferred Prime Minister stakes

In the preferred Prime Minister stakes Bill English is up two points to 28 per cent, while Winston Peters is second – down 1 on 10. Andrew Little is up one per cent to six per cent, level pegging with Jacinda Ardern.

On these numbers National would not quite be able to form a government with the support of existing support partners ACT, United Future and the Maori Party.

It would need the support of New Zealand First.

The centre left block could also technically muster the 62 seats needed for a majority with New Zealand First's help - making Winston Peters and New Zealand again the Kingmaker.