James Shaw's future as Green Party co-leader is looking more certain -- but isn't assured -- even though he isn't facing any challengers for the  job.

Green Party delegates are set to vote again on whether to re-elect Shaw or to keep nominations open.

The Climate Change Minister failed to get the support of 75-percent of delegates at the last vote, due to frustration from the party's more radical wing.

Newstalk ZB Political Editor Barry Soper told Mike Hosking he's probably done enough to change some delegates' minds.

Soper says Shaw has been meeting with the party membership and will probably get the votes he needs.

LISTEN ABOVE