The top of my suspicion is: NeoCracker.
Let's take a look. Day one he says that he thinks Dynast is mafia votes for him (making him one of the few that didn't vote for LoM a confirmed mafian). He says by that point me and Psychotic where his number two's. But when yesterday comes along, he shifts to Del and votes for him. Psychotic is killed, and confirmed mafian.
I think out of everyone, NeoCracker has the most scum look when it comes to vote connections. I think lynching him, or Lancealot would be the best choice, mainly because of Lancealot's inactivity. I would also love to hear who Laddy investigated (now that we have a good idea that he is the only cop, and can assume he's either normal, or paranoid.)
