[EM] Condorcet Criterion for plurality.

David Catchpole s349436 at student.uq.edu.au
Mon Dec 11 15:27:24 PST 2000


But they 'don't'. The phenomenon of splitting is well known in practice.

On Mon, 11 Dec 2000, Martin Harper wrote:

> David Catchpole wrote:
>
> > Votes:
> >
> > 3 A>B>C
> > 2 B>A>C
> > 4 C>A>B
> >
> > Using plurality, C wins. If we assume that voters have rankings, _whether
> > or not they can express them on their ballots_, then plurality fails a
> > Condorcet criterion.
>
> But, in the above case, the B>A>C voters 'should' vote strategically for A, and
> this means that A will win, so the sincere Condorcet winner should win. I'm missing
> something here, aren't I? ;-)
>
>

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