Bottom-Two-Runoff IRV: Difference between revisions
Content added Content deleted
Voting-Stuff (talk | contribs) (Edited elimination table in previous edit.) |
(Rewording intro, and preparing for merge of BTR-STV into this article) |
||
Line 1: | Line 1: | ||
'''Bottom-Two-Runoff IRV''' ('''BTR-IRV''') is a [[voting system]] that selects a single winner using votes that express ranked preferences |
'''Bottom-Two-Runoff IRV''' ('''BTR-IRV''') is a [[voting system]] that selects a single winner using votes that express ranked preferences. |
||
⚫ | |||
BTR-IRV was conceived as a sort of [[Instant-runoff voting]]-Condorcet hybrid, in that the runoff it uses is very similar to IRV, but the runoff doesn't ever eliminate a Condorcet Winner. |
|||
⚫ | BTR-IRV was originally proposed by [[User:Legrand|Rob LeGrand]] in 2006.<ref name=":0">[https://election-methods.electorama.narkive.com/LKfc52OI/an-example-of-btr-stv#post4 election-methods mailing list: An example of BTR-STV]</ref><ref>[https://www.mail-archive.com/election-methods@electorama.com/msg01311.html <nowiki>[EM] DH3 - error by me - should prefer BTR-IRV to Schulze beatpaths?</nowiki>]</ref> It was conceived as a modification to standard [[Instant-runoff voting|Instant-runoff voting (IRV)]] which ensures the runoff doesn't ever eliminate a Condorcet Winner. Thus, the method passes the [[Condorcet Criterion]], ensuring it functions as a [[Condorcet method]]. |
||
⚫ | The process |
||
This system is a form of [[Single transferable vote|single transferable vote (STV)]], and may be referred to by the more general name '''BTR-STV''', thought the multi-winner variant was not originally recommended by LeGrand.<ref name=":0" /> |
|||
⚫ | |||
=== An example === |
=== An example === |