[EM] To Bill Lewis Clark, re: Approval, CR, & IRV

Bart Ingles bartman at netgate.net
Sun Jan 18 12:27:01 PST 2004


Bill Lewis Clark wrote:
>
> Finally (to get back to my main point), since the behavior of
> non-strategic ("sincere") voters can differ greatly depending on the
> particular voting system used, it simply seems *wrong* to argue that
> approval voting and cardinal ratings are strategically equivalent.  In the
> real world, strategic voters will be forced to follow different strategies
> under each system, because of the different ways sincere voters will
> behave.

This is simply incorrect.  The existence of non-strategic voters would
alter the optimal strategy for strategic voters, but the alteration
would be the same for both AV and CR.  In either case, optimal strategy
is to give maximum support to some candidates, and minimum support to
the rest.

Bart



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