[EM] "Unmanipulable Majority" strategy criterion

[Chris Benham]

I have a suggestion for a new strategy criterion I might call  
"Unmanipulable Majority".

*If (assuming there are more than two candidates) the ballot 
rules don't constrain voters to expressing fewer than three 
preference-levels, and A wins being voted above B on more 
than half the ballots, then it must not be possible to make B 
the winner by altering any of the ballots on which B is voted 
above A.*

Does anyone else think that this is highly desirable?

Is it new?

Chris Benham


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