Jameson Quinn wrote:
I don't agree that "Sincere Favorite" is practically equivalent to the
FBC. The FBC is about not having to lower your one favorite candidate;
it is not about not having to pick a single favorite from your favorite
set. As a voter, I'd regard the former as a serious dilemma, and the
latter as a trivial detail.
Would this work as a votes-only variant of FBC?
"If Y currently wins, then you shouldn't be able to make Y lose by
replacing some ballots where Y is ranked below top with ballots where Y
is ranked at top and the other candidates are in arbitrary order".
That's a mirror image criterion: consider the ballots after modification
to be the voters' sincere ballots. Then the ballots before modification
are strategic ones where the voters in question compromised to get Y to
win. If the method passes FBC, the voters shouldn't have to alter their
ballots in any way that moves Y below top - and if a method passes this
criterion, for any pair of ballot sets that could be interpreted as this
happening, Y wins in both cases.
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