[EM] Approval-Elimination IRV fails FBC; AERLO

[Kevin Venzke]

Mike,

 --- MIKE OSSIPOFF <nkklrp at hotmail.com> a écrit : > 
> Approval-Elimination IRV (AEIRV) doesn't meet FBC. AEIRV shares properties 
> with ERIRV instead of with Bucklin.
> 
> Mike Ossipoff

AER > ERIRV > ERBucklin(whole) in my opinion.  My gripe with ERBucklin is still
that the voter has no good basis on which to decide whether to rank equally,
or strictly rank two candidates.  AER and ERIRV at least have the notion of
"traveling votes," where Bucklin requires voters to guess candidates' likely
median rank, which itself is based on everyone's guessing.

ERIRV and ERBucklin both have huge incentive to vote Approval-style at the top, 
which AER doesn't have so much.  Actually, I think AER needn't even permit equal 
ranking for this reason.

I haven't quite understood the AERLO option.  From a recent message you wrote:

>If no one above your AERLO line wins, then Y and everyone else above that 
>line are automatically promoted to 1st place, with X. But that doesn't 
>change the fact that you're meaningfully voting X over Y.

Does the AERLO promotion happen only once?  After one promotion, the winner
could be changed such that other voters wish they had been able to use the
AERLO option, but couldn't, because they liked the initial winner.

Kevin Venzke
stepjak at yahoo.fr



	

	
		
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