[EM] Schulze's method fails Condorcet's Criterion, right?

Bart Ingles bartman at netgate.net
Sun Dec 3 00:28:32 PST 2000


Doesn't Borda do very well with reported ratings?  (I don't agree that
there is such a thing as 'reported vNM utilities')


Markus Schulze wrote:
> 
> Dear Mike,
> 
> criteria and election methods are defined on the reported
> vNM utilities of the voters. In your example, candidate B
> is the Condorcet winner of the reported vNM utilities and
> the Schulze method chooses candidate B. Therefore your
> example doesn't demonstrate a violation of the Condorcet
> criterion.
> 
> In your example, you presume that candidate C is the
> Condorcet winner of the sincere vNM utilities and that as
> some voters vote strategically candidate B is the Condorcet
> winner of the reported vNM utilities. But in so far as
> criteria and election methods are defined on the reported
> vNM utilities, it is only relevant how the voters vote but
> not why they vote the way they vote.
> 
> Markus Schulze



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