I think it would be better to have the ability to change votes. If Mangini were to out of the blue announce that he was not in fact the drummer, we'd still have however many votes for him still up there, making the poll virtually useless as a tool to see who was really in the lead. I think the point of this thread wasn't to plug your vote in the very beginning and pray that who you voted for didn't get ruled out, but rather to follow the evidence about the new drummer and change your vote as needed to reflect your own personal opinion as it changed.