Reweighted range voting: Difference between revisions
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Psephomancy (talk | contribs) m (Psephomancy moved page Reweighted score voting to Reweighted Range Voting: I'm not sure that I agree with this move, but at least it preserves edit history now) |
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Reweighted Score Voting, also known as '''Reweighted Range Voting''' ('''RRV'''), is a [[Multi-Member System | Multi-Member ]] [[Score voting]] System. It is the natural extension of the [[Jefferson Method]] to [[Multi-Member System]]. If two |
'''Reweighted Score Voting''', also known as '''Reweighted Range Voting''' ('''RRV'''), is a [[Multi-Member System | Multi-Member ]] [[Score voting]] System. It is the natural extension of the [[Jefferson Method]] to a [[Multi-Member System]]. If two-level score (i.e. [[Approval voting]]) ballots are used then it reduces to [[w:Sequential proportional approval voting|Sequential proportional approval voting]]. |
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==Procedure== |
==Procedure== |
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Each ballot is given an initial "weight" of 1. |
Each ballot is given an initial "weight" of 1. |
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# The highest scoring candidate wins the first seat. |
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⚫ | # When a candidate wins, all ballots supporting that candidate are then reweighted, resulting in reduced vote weight going forward for voters who have successfully helped to elect a candidate. This reweighting happens in proportion to the amount of support given in order to ensure that all voters have an equitable amount of influence on the election |
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One variation is to use the reweighting formula 1/(1 + SUM/MAX). This variant reduces to D'Hondt when voters vote on party lines. |
One variation is to use the reweighting formula 1/(1 + SUM/MAX). This variant reduces to D'Hondt when voters vote on party lines. |
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Another variant is to use the reweighting formula 0.5/(0.5 + SUM/MAX), or equivalently, 1/(1 + 2*SUM/MAX). This variant reduces to Sainte-Laguë when voters vote on party lines. |
Another variant is to use the reweighting formula 0.5/(0.5 + SUM/MAX), or equivalently, 1/(1 + 2*SUM/MAX). This variant reduces to Sainte-Laguë when voters vote on party lines. |
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There is an infinite number of variants that all use the |
There is an infinite number of variants that all use the following formula: K/(K + SUM/MAX) where ½≤K≤1. The two above formulas are special cases for when K equals 1 and ½. |
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Each voter submits a ballot in which candidates are scored from 0 (worst) to 5 (best.) |
Each voter submits a ballot in which candidates are scored from 0 (worst) to 5 (best.) |
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Each ballot is given an initial "weight" of 1. |
Each ballot is given an initial "weight" of 1. |
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# The highest scoring candidate wins the first seat. |
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⚫ | # When a candidate wins, all ballots supporting that candidate are then reweighted, resulting in reduced vote weight going forward for voters who have successfully helped to elect a candidate. This reweighting happens in proportion to the amount of support given in order to ensure that all voters have an equitable amount of influence on the election |
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[[Category:Cardinal voting methods]] |
[[Category:Cardinal voting methods]] |