A Heroes player mentioned in the previous Mafia game that Alex's inactivity isn't necessarily an indication of him being Mafia; there's a reason behind it.
I did have the idea that we could leave both candidates alone and let them mutually ult each other.
It might be worth trying to vote for Alex or Sesame; there's another piece of information about them, in addition to everything I've been strongly arguing for ^_^, namely the complete absence of Bob and Levi in the newspaper. And Fragment's post clearly provoked them to go after these two.
Nancy being on the zombie team complicates things. I'm not quite getting it; I can't find any hint in the newspaper that it was indeed her. The only thing mentioned there is her gender. And there's also Lucy.
Regarding the vote, I want to vote for Alex. I've already stated all the arguments; I don't see any refutations, especially after the Shaman vote.