[EM] issues IRV Condorcet Approval

Rob Speer rspeer at MIT.EDU
Wed Aug 13 12:24:03 PDT 2003


On Wed, Aug 13, 2003 at 01:14:50PM -0400, Eric Gorr wrote:
> That's the problem with Approval - it does not truly allow for a 
> sincere vote. It only allows the voter to try to select the cutoff in 
> the right spot and then to hope for the best.
> 
> Perhaps this is the real reason why it would fail the Participation 
> Criterion.

Interpret "sincere vote" like this: any vote where the voter has a
preference order in mind, and everyone the voter approved is ranked
higher in that preference order than everyone the voter disapproved.

In other words, every voter can put their cutoff anywhere, and Approval
still passes Participation.

You have stated that putting the cutoff in the wrong place can be worse
than not voting at all; you have meanwhile only provided examples where
putting the cutoff in the wrong place is worse than putting the cutoff
in the right place.  Hence, you are not talking about Participation, but
about strategy.

-- 
Rob Speer




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