Too late at night to remember exactly what LNH means but, assuming it REALLY calls IRV better than Condorcet, I have to offer a compensating example.
Given: 37 A 31 B<C 32 C Condorcet and IRV will agree with humans who look at the numbers without studying election methods - that C is liked better than B, and twice as deserving as A, thus that C is the proper winner. Now add in two troublemakers who came in late and see what they can do: 2 A - C still wins. 2 B - IRV declares A the winner, while this does not disturb Condorcet (there is a cycle - 37A>33B>32C while 65C>37A). 2 C - C still wins. What it all means: Condorcet looks at all that the voters say, while IRV takes shortcuts. DWK On Thu, 21 Dec 2006 11:51:53 -0500 Tim Hull wrote: > OK, wasn?t sure about Condorcet - I knew that to meet the Condorcet > criterion with a voting method you had to violate later-no-harm, but not > that the finding of a Condorcet winner in and of itself violated LNH. > Thanks for clearing that up... > > Regarding the single winner methods, it seems that IRV or MMPO may be > the way to go there if one wants to maintain later-no-harm. Range seems > to be a good choice with respect to non-LNH compliant methods, and > reweighted range for multi-winner. > > I?m curious - is there any other multi-winner PR methods (besides STV) > that satisfy later-no-harm, exclusing variants of party list and asset? > Also, what tie-breaking methods for IRV/STV/MMPO satisfy LNH? > > I figure that the decision mostly comes down to whether LNH or > monotonicity are more important in our elections. I know many people > will bullet vote - probably more than in a hypothetical national > election - if the voting system fails LNH. However, monotonicity is > also a concern... -- [EMAIL PROTECTED] people.clarityconnect.com/webpages3/davek Dave Ketchum 108 Halstead Ave, Owego, NY 13827-1708 607-687-5026 Do to no one what you would not want done to you. If you want peace, work for justice. ---- election-methods mailing list - see http://electorama.com/em for list info