Wellington, Nov 6 NZPA - The latest political poll shows National still holding high levels of support.

The New Zealand Roy Morgan poll found 55 percent of all voters backed National, up 2.5 percentage points from the last poll by the company.

Labour was down 1 point to 20 percent.

Of the minor parties supporting the Government, the Maori Party was on 3.5 percent (up 0.5 points), ACT was down to 1.5 percent (down 1.5) and United Future was unchanged on 0.5.

The Greens were unchanged on 7.5 percent.

The poll of 951 voters was conducted between October 19 and November 1.

It had a margin of error of 3.2 percent.