New poll: Has National halted Labour's rise?

The Labour Party has closed the gap with National, a new Newshub-Reid Research poll shows.

National is down 1 point to 43.3 per cent, while Labour is up to 39.4 per cent, up 6 points.

National leader Bill English and Labour leader Jacinda Ardern are neck-and-neck on the preferred prime minister vote, with English on 30 per cent and Ardern on 29.9 per cent.

NZ First was down 2.6 per cent in the poll to 6.6 per cent. The Greens also fell, down 2.2 per cent to 6.1 per cent.

National could form a government with NZ First, while Labour would also need the help of the Greens.

A Labour-Green-Maori Party alliance would not get over the line, falling short of a majority by two seats.

The Opportunities Party barely moved, polling at 1.9 per cent, while the Maori Party fell slightly to 1 per cent.

In their previous poll, released three weeks ago, Labour was on 33.1 per cent and National on 44.4 per cent.

A One News Colmar Brunton poll on Thursday put Labour on 43 per cent and National on 41 per cent - the first time Labour had led in 11 years.

On the same day, English and Ardern went head-to-head in the first leaders' debate, in which there was no clear winner but English pressed Ardern hard on her party's "vague" tax policies.

In the lead-up to the latest poll, Ardern announced a free tertiary education policy. She spent today in Auckland, where she released a policy which would give renters more rights and make it harder for landlords to evict tenants.

The National Party launched its election campaign on Sunday, announcing a education package which included funding for every child to learn a second language.

English also announced that National would extend paid parental leave by four weeks and give parents using IVF more support.

The National leader spent today in West Auckland, where he announced an $80 million policy to fund more drug rehabilitation and introduce hardline anti-gang measures.