Support for the Labour Party has edged up in the latest 3News opinion poll.
Labour scored 37% support in the poll, but it's still well behind the National Party which recorded 48% support.
While Labour's support rose by two percentage points in this poll, support for the National Party remains unchanged from a month earlier.
Of the minor parties: the Green Party recorded 6% support, and New Zealand First 3%, both down one percentage point on the July poll.
The ACT party went up from 1 to 2%.
Both Prime Minister Helen Clark and National's leader John Key saw their support as preferred prime minister rise, with Mr Key on 34% and Miss Clark on 31%.
The poll was carried out between 14 - 20 August and has a margin of error of plus or minus 3.1%.
It mirrors similar trends in the One News and Roy Morgan polls. Radio New Zealand's political editor says Labour Party insiders believe the gap between the two major parties will continue to narrow, with the election less than three months away.