[EM] Approval Voting vs Instant Runoff Voting:

[Richard Moore]

Martin Harper wrote:

> In plurality you want to bolster your support your favourite because
> apparently popular candidates get compromise votes and don't get chucked
> out in favour of compromises. In approval, though, the same doesn't
> apply. I can see only one case where one would want to insincerely dump
> your favourite in a poll:

I never said people would dump their favorites in the poll and I can't see
any
rational person doing so (unless they had the kind of omniscience it would
take to predict the effect on other voters). What I was referring to is
voters who
would be likely to vote two (or more) candidates in the election, stating
in a poll that they will only vote for one (their favorite). Thus if I say I
will vote
A and not AB, I might hope to cause some B voters to vote AB as well.

 -- Richard