James seems to be stretching his interpretation a bit far.
Agreed that, while the voter can choose to rank all candidates, the voter
is permitted to omit those least desired.
In Condorcet every ballot is counted. For each the counter considers EVERY
pair of candidates, such as A and B. If the voter has indicated preferring
A>B, that is recorded toward A winning; likewise for B>A.
As to IRV, while using the same ballot, it only looks at enough to satisfy
it purpose - which DOES NOT INCLUDE knowing whether the voters like A
better than B.
DWK
On Sun, 9 Nov 2008 16:20:10 -0000 James Gilmour wrote:
Kathy Dopp > Sent: Sunday, November 09, 2008 2:17 AM
Your statement oversimplifies and ignores details/differences
between IRV and Condorcet. IRV proponents may pretend not to
know that Condorcet methods do not exhibit most of the flaws
of IRV counting methods. For example, Condorcet, to my
knowledge treats all voters ballots equally, considers all
choices on all ballots,
If I have understood the various submissions correctly, the principal objection
to IRV on THIS ground, is that the ballot papers of
voters who express different numbers of preferences are thereby treated
differently, and in such a way and to such an extent that
these differences should render the IRV voting system "unconstitutional".
It is correct that Condorcet counting considers all the preferences marked on
the ballot papers, in a sequence of pair-wise
contests. However, Condorcet counting has no option but to treat differently
the ballot papers of voters who have expressed
different numbers of preferences, because such voters will be excluded from
some of the pair-wise counts.
If this difference in the treatment of ballot papers with different numbers of
preferences would be a "fatal" flaw in IRV, would it
not also be a "fatal" flaw in Condorcet counting, and indeed in any other
voting system where voters may express different numbers
of preferences?
James Gilmour
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