The Green Party has ratified a formal policy on abortion, making it the only party in Parliament to have one, Radio New Zealand reports.
It would legislate to decriminalise abortion and protect the right to end a pregnancy.
Having an abortion in New Zealand is still a crime under the Crimes Act, as The Wireless reported last year, unless a pregnant woman faces a danger to her life, physical or mental health.
Green Party MP Jan Logie said it is time that abortion is removed from the Crimes Act, and brought out from that shadow of judgement and mistrust of women, because ultimately it is a health issue.
And executive director of Family Planning Jackie Edmond said hardly any women know abortion is in the Crimes Act.
The latest figures on abortion held by Statistics New Zealand show that in 2012 the abortion rate had fallen to a 17 year low.