I attempt to always have valid reasons for voting for someone, as a sign of respect. If I don't have a case to make, then the lynch is random. IRL, If the police had a vague intuition that someone were guilty, but no evidence, I think they wouldn't be able to arrest them. I get voted all the time on little or no evidence, and I shrug it off. However, I've seen right here in this thread, reasonless voting seems to be an effective pressure tactic. And mafia games aren't meant to have due process and fair trials for the scum. And since there is little evidence to go on, this is what we have to do to win.