I live in Brighton Pavillion. Caroline Lucas is on course for a solid win (incidentally, the Green council are on course for a solid kicking out because they're shit). She won't stand for election as Green Party leader, she stood down (ie was not voted out) in order to spread the profile of the party across more than one person and that's worked. There is no advantage to her returning to leadership and she's made clear she wouldn't play for power over what is best for the party.