Labour regains some ground in latest poll

The National Party has lost ground to the Labour Party and the Green Party in the latest opinion poll.

A One News Colmar Brunton poll released on Sunday shows support for National is down three points to 50%.

Labour is up one to 35%.

The Greens are also up one to 7%, the only minor party to reach the 5% threshold required to enter Parliament without an electorate seat.

Support for the Maori Party was steady on 3.3%.

New Zealand First is up almost a point to 2.5% and the ACT Party remains on 0.9%.

Helen Clark has clawed back ground as the preferred prime minister, up four points to 31%.

National leader John Key remained steady on 36%.

The poll sampled 1000 voters and has a margin of error of 3.1%.