Green Party members have failed to reconfirm James Shaw as their co-leader today, allowing him to be challenged for his position.
Voting at their annual general meeting on Saturday, which was held online this year, delegates did re-elect co-leader Marama Davidson.
The Green Party's constitution allows for nominations to be re-opened if at least 25 percent of voters choose that option.
Nominations for Shaw's co-leadership spot will be open for a week, allowing another candidate to put their name forward.
Recent changes to the Greens' rules mean while one co-leader has to be a woman, the other can be any gender. There's also a requirement that one of the co-leaders be Māori.
Last year Shaw saw off a challenge from Dunedin-based activist James Cockle, who said he wanted to see "real leadership" and "direction" and for the party not to be "Labour's little helper".
Shaw received 116 votes for the male co-leadership, to Cockle's four.
In 2021 a Newshub-Reid Research poll showed Green MP Chlöe Swarbrick overtaking both Shaw and Davidson in the preferred Prime Minister rankings, with 1.8 percent of voters wanting her to be Prime Minister. Shaw was on 0.8 percent and Davidson on 0.5 percent. Swarbrick told Newshub she doesn't see herself as either co-leader or Prime Minister.