I'm voting for zexen.
Here's my reasoning. We just got rid of two townfolk and no mafia. Craan and Gnizmo both had the same idea of getting rid of Zexen, and then he played the "they're acting suspicious" game and turned the attention from himself to Craan, even getting Gnizmo to change his vote. Then is it any coincidence the other person originally trying to vote him off (Gnizmo) gets killed that night? Here's a direct quote from zexen's previous vote:
"Anyway, I think that Craan voted far too quickly and without asking what Gnizmo voted, as if they were in agreement or something. Sounds suspicious. I think he's a mafia"
So that was suspicious to him, and he thought they were in agreement, meaning he believed they were both Mafia and working together. He turns the attention to Craan and night kills Gnizmo. I'll admit he got me fooled into voting for Craan also and making Craan look suspicious.