Score voting: Difference between revisions

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'''Range voting''', or '''ratings summation''', or '''average ~~voting~~''', or '''cardinal ratings''' is a [[voting system]] used for single-seat elections.

'''Range voting''', or '''ratings summation''', or '''average rating''', or '''cardinal ratings''' is a [[voting system]] used for single-seat elections.

(It ~~could~~ also be used for multi-seat elections, but ~~that~~ is a ~~poor idea~~

(It can also be used for multi-seat elections, but not with proportional results.)

since it would lead to massive proportionality failures, where, e.g. a 51%

Whig electorate could elect a 100% Whig slate of winners.)

It is also used on the web - for rating movies (Internet Movie Database), comments (Kuro5hin), and many other things - and something very similar to it is used

in the Olympics to award gold medals to gymnasts.

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about those candidates.

Range voting satisfies the [[monotonicity criterion]], the [[participation criterion]], the [[Consistency Criterion]], the [[summability criterion]], the [[Favorite Betrayal criterion]], [[Independence of irrelevant alternatives]], the [[Non-compulsory support criterion]] and ~~the~~ [[~~Independence~~ of clones ~~criterion~~]].

Range voting satisfies the [[monotonicity criterion]], the [[participation criterion]], the [[Consistency Criterion]], the [[summability criterion]], the [[Favorite Betrayal criterion]], [[Independence of irrelevant alternatives]], the [[Non-compulsory support criterion]] and [[Strategic nomination|independence of clones]].

Range voting is a [[Smith method]] and elects the [[Smith winner]] if one exists.

== Counting the Votes ==

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is the winner.

(Another method of counting is to find the [[median]] score of each candidate, and elect the candidate with the highest median score - see [[Median Ratings]]. Because strategic voting will typically lead to a vast number of candidates with the same median, a ~~rule~~ to resolve ties is needed~~. Using the median is much more complicated than using the average~~.)

(Another method of counting is to find the [[median]] score of each candidate, and elect the candidate with the highest median score - see [[Median Ratings]]. Because strategic voting will typically lead to a vast number of candidates with the same median, a secondary measure to resolve ties is needed.)

==Example==