> On Sep 14, 2017, at 9:36 PM, Kerim Aydin <ke...@u.washington.edu> wrote:
>
>
>
> An endorsement is a type of conditional. Does formalizing the "endorse" mean
> other types of conditionals are forbidden? are they allowed outside the list
> but not inside?
>
> For example, would "I vote for {Incumbent if e does X, Someone else if e does
> Y,
> Third person}" (assuming X and Y are pretty easy to determine) be allowed?
>
> If not, could you get the same effect by conditionals outside the list, e.g.
> "If incumbent does X, I vote {Incumbent, Y}, otherwise I vote {Y, incumbent}.”
I think IRV is easier to resolve, by a considerable margin, if conditionals
only apply to the whole ballot. Reasonable conditions can generally be hoisted
out of the list the way you describe, so I don’t think barring conditionals
within the list does any damage to expressiveness, but it might be that
combinatorial explosions for even medium-sized ballots make hoisting
impractical.
More generally, I think IRV ballots should be able to use the same conditions
any other ballot can. If that means dropping ENDORSE from the list, so be it,
but I did specifically want to resolve the question of whether {a, ENDORSE n,
b} is a valid ballot.
-o
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