[EM] PR-STV with approval based elimination

[Dan Bishop]

Dermot Cochran wrote:
>
> On 30 Apr 2009, at 17:24, Raph Frank wrote:
>
>> Another option would be to have the voter submit a ranked ballot and
>> also have an "approval threshold" candidate.  All candidates ranked
>> higher than that psuedo-candidate would be considered approved.
>> However, that gives voters less freedom to approve across party
>> boundaries (or less freedom to interfere with who is elected for other
>> parties, depending on your viewpoint).
>
> It would seem intuitive that candidates with preferences are deemed 
> approved, and that candidates without any preference assigned are 
> non-approved.  For example of there are 10 candidates and I rank only 
> nine, rather than giving a tenth preference for my least favorite 
> candidate, that that would imply non-approval. 
I disagree.  A voter could very well have preferences like

A (100) > B (90) > C (80) > D (60) >> E (20) > F (0)

in which they wouldn't vote for E on an Approval ballot but still have a 
strong enough preference for E>F to be worth expressing.