The results were declared on Friday, giving shape to an issue that has been debated in the country for years. 

Friday's results showed 65.2% of voters supported the End of Life Choice Act 2019 coming into force as a new law, reports BBC. 

The move will now allow terminally ill people, with less than six months to live, to be given the opportunity to choose assisted dying if approved by two doctors.

The referendum is binding and the law will come into effect in November 2021.

However, the results do not include an estimated 480,000 special votes, including postal and overseas ballots, so the full outcome will not be confirmed until next Friday. But with such strong support, the final outcome is not expected to change.

Once the law comes into force New Zealand join a small group of countries, including the Netherlands and Canada, that allow euthanasia legally.

In a separate non-binding referendum held at the same time, New Zealanders narrowly rejected a proposal to legalise recreational cannabis.

The preliminary results on the cannabis vote was 53.1% no and 46.1% yes - though this result may be subject to change when the special votes are counted.