The Green Party will announce who will replace Caroline Lucas MP as leader later.
The Brighton Pavilion MP announced she would be standing down as leader earlier this year to make way for a new generation of activists to enter parliament.
The 51-year-old will continue to serve her Sussex constituency.
More top news
Banbury has banned celebrity guests from the Christmas lights switch-on in the hope it will appeal to more people
Nigel Farage's former deputy Mr Nuttall says he's the only candidate who can rebuild and unify the party.
Nigel Farage told Peston on Sunday he will not be backing Suzanne Evans as the next Ukip leader.