Quick Runoff: Difference between revisions
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'''Quick Runoff''' |
'''Quick Runoff''' (also called '''QR''', ''Chain Runoff'', or '''Instant Chain Runoff''') is a method devised by [[Kevin Venzke]] which satisfies [[Later-no-harm]] but, unlike [[IRV]], can sometimes elect the candidate with the fewest first preferences. |
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The method is so named because in the three-candidate case it is not as "instant" as [[IRV]], as instead of a single top-two runoff, there is first a simulated runoff between the top two candidates, and then potentially the bottom two candidates. |
The method is so named because in the three-candidate case it is not as "instant" as [[IRV]], as instead of a single top-two runoff, there is first a simulated runoff between the top two candidates, and then potentially the bottom two candidates. |
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The method may be badly named because the winner is actually found without doing any vote transfers. The results of the "runoffs" are inferred from the pairwise contests. |
The method may be badly named because the winner is actually found without doing any vote transfers. The results of the "runoffs" are inferred from the pairwise contests. |
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The method was first proposed in 2010.<ref>{{cite web|url=http://lists.electorama.com/pipermail/election-methods-electorama.com/2010-May/091628.html|title=Quick Runoff (QR) LNHarm method and commentary|website=Election-methods mailing list archives|date=2010-05-16|last=Venzke|first=K.}}</ref> |
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==Definition== |
==Definition== |
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Memphis has a majority loss to Nashville, so Memphis will not win. Nashville does not have a majority loss to Knoxville. The method thus ends here, with the election of Nashville. |
Memphis has a majority loss to Nashville, so Memphis will not win. Nashville does not have a majority loss to Knoxville. The method thus ends here, with the election of Nashville. |
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== References == |
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<references /> |
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[[Category:Single-winner voting methods]] |
[[Category:Single-winner voting methods]] |