The Green Party will be looking to shore up its support on the second day of their AGM today.

Co-leader Marama Davidson will release the Greens' election manifesto at Auckland University.

NZ Herald political reporter Michael Neilson says the Greens are trying to appear more united by warning a prospective National-ACT Government would set climate change policy back by 30 years.

"It did seem this year that they really want to appear focused on the election and none of these kind of messy issues that have been there in the past."

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