Later-no-harm criterion: Difference between revisions
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Dr. Edmonds (talk | contribs) (Added context for utilitarianism and score) |
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{{Wikipedia}}<h4 class=left>Statement of Criterion</h4> |
{{Wikipedia}}<h4 class=left>Statement of Criterion</h4> |
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<p><em>A voter giving an additional ranking or positive rating to a less-preferred candidate cannot cause a more-preferred candidate to lose.</em></p> |
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<p><em>Adding a preference to a ballot must not decrease the probability of election of any candidate ranked above the new preference.</em></p> |
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<h4 class=left>Complying Methods</h4> |
<h4 class=left>Complying Methods</h4> |
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As a result, voters may feel free to vote their complete ranking of the candidates, which in turn may give the election method more complete information to use to find a winner. |
As a result, voters may feel free to vote their complete ranking of the candidates, which in turn may give the election method more complete information to use to find a winner. |
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This criteria is equivalent to the criteria that the system is non-compramizing in that it will never elect a compromise or [[Utilitarian winner]]. This insistence on majoritarianism is not universally desired so it cannot be claimed that this criteria is always one which would be desirable to pass. If one wants a system which can elect a compromise winner then it would be desirable to fail this criteria. |
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'''Later-no-harm''' is incompatible with the [[Condorcet Criterion|Condorcet criterion]]. |
'''Later-no-harm''' is incompatible with the [[Condorcet Criterion|Condorcet criterion]]. |
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