Sorry, for some reason, the hyperlink in my previous post was omitted. Let me try again: http://rangevoting.org/WinningVotes.html
This is a web page that discusses "winning votes" versus "margins" and includes a careful look at the "DH3 pathology" which is a very serious problem faced by both Borda and every Condorcet method. It is shown that DH3 still clobbers Condorcet methods even if they allow equal rankings and even if they use winnign-votes or margins. The reason DH3 is "very serious" is it has the maximally bad effect (elects worst canddt) and it has near maximal commonness (merely need 3 rivals and a dark horse running). Perhaps you all will have some comments. I'm quite sure I have not included all the wisdom about wv versus margin that EM has accumulated. But on the other hand I also feel those at EM have underestimated or trivialized the power of the DH3 pathology to cause massive destruction. Warren D Smith http://RangeVoting.org ---- election-methods mailing list - see http://electorama.com/em for list info
