In the latest NZ Herald Digipoll, it shows the trend of all polls taken for well over a year that National continues to lead with a comfortable margin over Labour.
The political divisions and allegiances triggered by the furore over secret donations to New Zealand First and leader Winston Peters have had little effect on party standings in the latest Herald-DigiPoll survey.
Support for National, which has said it would not work with New Zealand First after the election, has risen slightly, by 1.4 percentage points, to 51.4 per cent of decided voters.
This would give it 68 seats in Parliament - enough for it to govern without a coalition partner.
Labour, which aligned itself with Mr Peters, is down 0.6 points to 35.7 per cent.
New Zealand First is up by 0.7 but to only 2.8 per cent - not enough for it to stay in Parliament after the November 8 election without winning an electorate seat.
