Hallo, Steve Eppley wrote (18 Jan 2009):
> MAM satisfies all the desirable criteria satisfied > by Beatpath Winner (aka Cloneproof Schwartz Sequential > Dropping--CSSD for short--aka Schulze's method). Many people consider the Simpson-Kramer MinMax method to be the best single-winner election method because it minimizes the number of overruled voters. The winner of the Schulze method is almost always identical to the winner of the MinMax method, while the winner of the ranked pairs method differs needlessly frequently from the winner of the MinMax method. For example, Norman Petry made some simulations and observed that the number of situations, where the Schulze method and the MinMax method chose the same candidate and the ranked pairs method chose a different candidate, exceeded the number of situations, where the ranked pairs method and the MinMax method chose the same candidate and the Schulze method chose a different candidate, by a factor of 100: http://lists.electorama.com/pipermail/election-methods-electorama.com/2000-November/004540.html Jobst Heitzig made a thorough investigation of the 4-candidate case. In no situation, the Schulze method and the MinMax method chose different candidates. ("Beatpath and Plain Condorcet are unanimous in all these examples!") But in 96 situations, the ranked pairs method and the MinMax method chose different candidates: http://lists.electorama.com/pipermail/election-methods-electorama.com/2004-May/012801.html There are even situations where the winner of the ranked pairs method differs from the winner of the MinMax winner without any plausible reason. See section 9 of my paper: http://m-schulze.webhop.net/schulze1.pdf Markus Schulze ---- Election-Methods mailing list - see http://electorama.com/em for list info