[EM] IRV vs Condorcet - a challenge
Dave Ketchum
davek at clarityconnect.com
Mon Jun 12 09:22:59 PDT 2006
I see ranked choice, represented by IRV and Condorcet, as deserving
serious consideration.
I offer an example emphasizing an IRV weakness - not expectable
frequently, but earns really ugly publicity when it happens.
Some competing methods:
Plurality - pretty well agreed to be a loser.
PR - worth considering when a district can be constructed for
electing multiple members.
Approval - a possibility when ranked choice ballots seem too
difficult to implement. I call Approval unacceptably weak for not letting
the voter indicate multiple levels of preference such as desired,
acceptable, tolerable, reject.
Some features:
Permitting equal ranking for multiple candidates. Desirable for
pleasing those who call Approval desirable; doable with Condorcet, though
there can be arguments as to counting' Not doable as practical for IRV
(explain how if you disagree).
Demanding that voters rank all candidates. UNACCEPTABLE! Voters
CANNOT be forced to do intelligent ranking among candidates they lump as
rejects - especially when there are many rejects.
Permitting voters to rank all candidates. ESSENTIAL for at least
the voters' top three choices; more is better.
I offer a vote for choosing when elections should be held:
8 MAR,APR
9 APR
10 MAY,APR
26 SEP,OCT
23 OCT
24 NOV,OCT
Condorcet will recognize OCT as winner, over MAR,MAY,NOV,SEP,APR.
IRV will not see OCT desirability, so will award APR after discarding
MAR,MAY,OCT,NOV,SEP.
--
davek at clarityconnect.com people.clarityconnect.com/webpages3/davek
Dave Ketchum 108 Halstead Ave, Owego, NY 13827-1708 607-687-5026
Do to no one what you would not want done to you.
If you want peace, work for justice.
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