Wellington, June 22 NZPA - A string of negative stories has not dented the National Party's popularity according to the latest poll.

The Roy Morgan poll had National unchanged on 52 percent support despite a bleak budget in May, the Richard Worth affair and a disastrous by-election in Mt Albert.

The poll taken between June 1 and June 14 had Labour support up two points to 33 percent, the Greens down one to 7.5 percent, ACT on 2.5 percent (up 0.5), the Maori Party on 2.5 percent (down 0.5).

United Future and the Progressive Party were unchanged on 0.5 percent support.