"Please vote at this election and think carefully when you do.
"We live in a democracy, we don't all share the same views, but one thing is for sure our environment needs our active protection what ever our government.
"No environment. No economy."
Malcolm has not shied away from speaking her mind in the past, publicly opposing National's proposed mining of conservation lands and fronting climate change campaigns.
At the Green Party campaign launch the acclaimed actress said National had demonstrated "a disregard for the 200,000 children living below the international poverty line", a "clear lack of understanding on how to support children's education", and a "dispassionate and punitive approach to those in our prisons".
"We have a leader who seems to be more interested in talking about his cats on the radio, being seen at the rugby and getting on the cover of the Women's Weekly.
"I thought that was my job."