Tubby, Jon, Vash, and CG are lead suspects for wolves.
I do not believe there is a way to know if the Doctor is still alive. Dean stated he was confused about his role. Doctor is pretty straight forward. Tough Guy a little less so, but again, Tough Guy dies at the end of the day phase, and no one besides people being voted out have died at the end of day phases, so Dean was not the Tough Guy. Kat did mention that there were some questions regarding what they can do with their random townie roles that don't do anything, so it's possible Dean was confused of what to do with his role. I don't know what is confusing about Marksman, but if Dean was confused about an actual role, Marksman makes more sense than Doctor. Marksman kills happen before wolf kills, so it is very likely for a Dean to get off a kill but then be killed himself.
Confusion wolf has used up both instances of their ability and can no longer make deaths unknown.
Wolf trickster is possibly still in play but odds of them guessing who the Witch kills tonight is pretty slim, and that assumes the Witch is even still alive.
Tubby being a total unknown makes this pretty hard. But he's also a total non-threat.
If we vote a townie, the Tough Guy and whoever else is alive with a power townie role needs to get their actions correct or it's GG.
I believe we have a 75% chance of getting the vote correct... as long we pick one of the four lead suspects.