[EM] Condorcet subject to burying

Stephane Rouillon stephane.rouillon at sympatico.ca
Sat Apr 3 06:23:01 PST 2004


I just wanted to point out that I support
James (Armitage) analysis that any cycle breaking method applied to a
Condorcet method makes it subject to the unsincere ranking strategy
called
burying (not "digging" as I previously said) independently of the
criteria used
(winning votes, margins or relative margins).

How serious is the problem, which choice minimize this?
I think any weak Condorcet winner can be stolen with the appropriate
strategy,
winning votes seems able to protect a strong Condorcet winner (which has
a more than 50% victory against any opponent) and margins and relative
margins can protect a stronger Condorcet winner (which has a more than
two third victory against any opponent). Now, does How does that
protection evolve for weak Condorcet winners?
Still a mystery to me.

Steph.




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