EXPRESSIVE:
You give information about all candidates not just one,
and QUANTITATIVELY – not just who you prefer, but how much.
ENCOURAGES HONESTY NOT STRATEGY:
Your score for candidate C in no way affects A vs. B battle.
So you can give your honest opinion of C without fear of "wasting your
vote" or hurting A.
Voter never has any incentive to vote someone over ("betray")
his/her favorite. (May sound like an obvious and easy criterion, but
very few other
voting systems obey it!)
This should decrease the importance of cash.
UNAFFECTED BY CANDIDATE CLONING:
If A has "clones" A2, A3, that neither hurts nor helps them,
unlike in the old "plurality voting"
system where the clones "split
the vote" and lose; and also
unlike "Borda voting" where a party
assures victory merely by running enough clones.
No more bitter emnity between alike candidates.
FEWER "SPOILED BALLOTS"
and LESS FRAUD.
In plurality
voting, an accidental hanging chad or overvote can cause your vote to
be discarded. With range voting, a hanging chad causes
only part of your vote to get discarded
(converted to "blank") with the rest – your opinions of all the other candidates –
still operational. There's no such thing as an "overvote" since expressing opinions
about all candidates is the idea; there's no wrong way to fill in a ballot.
RV also reduces risk of TIES.
UNIQUELY BEST
among all common single-winner election methods as measured by
BAYESIAN REGRET.
(Holds for all 720 tried combinations of the following:
number V of voters and N of candidates with V>N>2,
several kinds of "utility generators", several
amounts of "voter ignorance," and
with either "honest" or "strategic" voters.)
HUGE POSITIVE IMPACT: "Democracy" improved over monarchy and feudalism.
Bayesian regret measurements say just switching from plurality to
range will cause at least as much
further regret reduction!
HONEYBEES
& ANTS
have run trillions of elections over the last 20-50 million years
to make hive relocation decisions. Under severe evolutionary pressure, they came up with...
range voting!