Jobst, so you were thinking of Borda where equal rankings are not allowed. Why didn't I think of that?
I was thinking of "vote against one," which could be called Reverse Plurality, the base method for each step of the Coombs sequential elimination method. Equivalently, it could be described as, "vote for exactly two candidates." This method would elect C because the 45 in favor of B would have no reason to vote against B or C, so they would all vote against A. If the other 55 voted more against C than B, then B would win, so they will vote more against B than C, which allows C to win. Unlike Borda, this solution works even if the ratings for C are low: 55 A>>C>B 45 B>>C>A I'm not advocating Reverse Plurality, but it is perhaps the simplest deterministic solution to the challenge. Forest ---- Election-Methods mailing list - see http://electorama.com/em for list info
