For the sake of argument, let's assume all the claimers are telling the truth. Let's also assume none of the mafia voted for Blank. Let's also eliminate Cid as he is assumed to have poisoned Galuf if we believe Faris's claim. Who does that leave?

Inactives
Leon - is semi-active but did not vote yesterday
Luneth
Rikku
Penelo

Actives
Relm
Setzer
Wakka

My guess is that there is a mafia in the Inactives, and at least one in the Actives. Setzer voted for Wedge, at a time where Wedge looked to be the best candidate after Blank. Relm voted for Yuffie, and then tried to Day Kill me jokingly to shut me up (and it worked for a while, admitedly). Wakka is just Wakka. I can't get a read on this guy because he mostly just spams.

Thinking about the day and the voting history, my gut is telling me Relm.

##Unvote: Wakka
##Vote: Relm

I will also try to get through Blank's posts at some point and report back.