Yes, I do have to remind myself that we have to start from an assumption that people are going to be honest. I doubt that scamming boardwide votes is likely to seem like attractive fun. And it's unlikely to swing the balance in any case.
I'm also thinking one thread, since as you and Voronwe point out, we can just delete obsolete posts. If no one has any objection, I'll make the thread in the next day or two, using the Administrator ID. Unless somebody else really wants to do it!