Green MP Chlöe Swarbrick is expected to make an announcement on Friday on whether she will run for the Green Party co-leadership.
She is set to hold a press conference at 11am on Friday, a strong signal she will throw her hat in the ring.
The Auckland Central MP didn't want to hold a press conference on Thursday as a number of new Green MPs are giving their maiden speeches.
It comes after current Greens co-leader James Shaw announced on Tuesday he will be resigning from the role.
Shaw and co-leader Marama Davidson have remain tight-lipped over who could be the next co-leader, though Shaw did say on Wednesday there was an heir apparent.
"Yes absolutely, and I think that should be obvious to pretty much anyone. I'm not going to get drawn on who that is. It is really important that they are able to say that they are standing, that they're able to put their best foot forward."
Shaw said after his resignation speech that he wasn't going to "publicly endorse any candidate for the co-leadership".
If Swarbrick was to get the role, there would be two female co-leaders.
Shaw said he "doesn't see why" the party couldn't have two female co-leaders. The Green Party has a mandate that the party must have one female leader and one leader of any gender. One leader must also be Māori.
"Things are shifting and we are more embracing of gender diversity and of other ethnicities and so on than we have been in politics in previous decades," Shaw said.
The Green Party has a weeks-long process to decide their new co-leader, which includes meetings with members. Nominations opened on Wednesday and will close on February 14.
Each Green Party branch is entitled to a certain number of votes proportionate to the number of members who live in that electorate.
The new co-leader is expected to be announced on March 10.
