I'm hesitant to want to lynch someone based solely on one person's word with no other evidence. But lynching Snape would be worse, since if he's true, would just be doing the mafia's job for them. If you guys want to test Snape's roleclaim, lynching Dudley would be a lesser evil. At least we'd have a little more to go on than "just being annoying" like the current Myrtle bandwagon is.

Still, I'm sticking with my current vote for Hermione for now. She has been the most suspicious to me that I think is most likely scum.