Venzke Bucklin Variant: Difference between revisions
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'''VBV''' (for "Venzke Bucklin Variant") is a three-slot method defined by [[Kevin Venzke]] as an attempt to improve the [[Later-no-harm]] performance of [[MCA]]. See also [[IBIFA]] by Chris Benham, which could be seen as a similar attempt that doesn't sacrifice [[FBC]] or [[monotonicity]].
==Definition==
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The method sacrifices FBC and monotonicity basically because only one candidate's supporters can receive the privilege. It's possible that a candidate can win when a certain other candidate is the TRW, but not when they are the TRW themselves.
== Example ==
[[Category:Single-winner voting systems]]▼
{{Tenn_voting_example}}
Suppose that the voters place their first preference in the top slot and their second preference in the middle slot, leaving the bottom two preferences unvoted.
Memphis is the top-ratings winner, so we count all the preferences aside from the middle-slot Nashville preferences cast by the Memphis supporters. The result is that Chattanooga is the "tentative" winner, since all 58 non-Memphis voters voted for Chattanooga. Since Memphis is not winning, their middle slot preferences are counted. This brings Nashville's vote count up to 68 in comparison to Chattanooga's 58, so Nashville wins.
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