Mr. Bristow-Johnson is right.
I made a mistake. IRV did *not* produce the same result that FPTP (with
identical sets of preference) would have in Burlington..
I meant they both did not elect the most popular winner as he elegantly
wrote.
But I would underline the fact that my observations, that go without
saying according to Mr Bristow-Johnson,
("I can observe that IRV allows more often to obtain a Condoret winner
when plurality fails, than plurality finds a Condorcet winner when IRV
fails.")
seem to be contradicted by Mr Lomax own data....
S. Rouillon.
robert bristow-johnson a écrit :
On Jan 10, 2010, at 1:57 PM, Stéphane Rouillon wrote:
from the data you produce, I agree that for the Burlington election,
IRV did produce the same result
FPTP would have produced.
it's *not* the same result. it is a worse result if you force the
majority to vote strategically (which is what FPTP would do) than if
you punish a minority for not voting strategically (which is what IRV
did). FPTP would have elected Kurt Wright to the dismay of 66% while
IRV elected Bob Kiss to the dismay of far fewer because the Dems in
Burlington like Progs more than they like GOPs.
However, nobody can generalize this perticular case to any election.
but it *does* serve as a useful object lesson.
I can observe that IRV allows more often to obtain a Condoret winner
when plurality fails, than plurality finds a Condorcet winner when
IRV fails.
well, that goes without saying.
So I claim IRV is more reliable than plurality.
it saved Burlington from electing the 3rd most popular candidate and
elected the 2nd most popular candidate. the candidate preferred by
the majority of voters (and thus would beat any other candidate in the
final round had he been it the final round) was eliminated before the
IRV final round.
it's a mixed result for the majority of Burlington voters. but it's
still better than Plurality or the Delayed-Runoff (which is what would
happen if the old law was in force).
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