[EM] RWE, Participation

[Kevin Venzke]

Eric,

 --- Eric Gorr <eric at ericgorr.net> a écrit : 
> >I suspect it could be proven that a voter who uses only two ranks (due to
> >equal ranking) in a method which never rewards order reversal, could never
> >worsen the result from his perspective.
> 
> My intuition would say the same thing.
> 
> (assume the number of candidates > 3)
> 
> However, considering that insincere truncation 
> will harm the ability for a method to find the 
> group preference by shifting the decision on how 
> at least two candidates compare with one another 
> when that voter did have a sincere preference 
> between them, suggesting that each voter only 
> rank two candidates does not appear to be a good 
> option.

First, that last phrase is not what I was suggesting.  I meant that a voter
would group all candidates into two groups, not that he would rank two
candidates.  The value I see in this is that the voter cannot make the result
any worse than he has braced himself beforehand to accept.  (This is equivalent
to the situation in Approval: Your vote can't make someone win whom you didn't
approve.)

It's not that I would encourage voters to do this, it's that a voter COULD
do this if they were concerned about their vote spoiling the result.  So
what I am saying is that a method should permit this approval-style voting 
to work.


Kevin Venzke
stepjak at yahoo.fr


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