Wellington, May 30 NZPA - National's popularity has taken a dip, a new poll shows.

The One News Colmar Brunton poll, the first major one since the May 20 Budget, showed support for the National Party had dropped five percentage points to 49 percent, but remained well clear of Labour, which was stagnant on 33 percent support.

The poll showed the Greens had climbed to 7 percent support and the Maori Party to nearly 4 percent. ACT remained less than 2 percent.

In the preferred prime minister stakes, Labour leader Phil Goff had only 6 percent of the vote, 40 percentage points behind National leader and Prime Minister John Key.