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SODA voting (Simple Optionally-Delegated Approval): Difference between revisions
SODA voting (Simple Optionally-Delegated Approval) (view source)
Revision as of 18:48, 5 July 2011
, 13 years ago→Procedure
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== Procedure ==
Essentially, you vote for any number of candidates (as with approval); but you may also decide to delegate your ballot to your favorite candidate. Top approval wins. The full procedure is:
'''Candidates publicly declare their delegation order'''
# Each voter submits an approval ballot. There is some way (such as an extra write-in slot) to vote for an invalid candidate named "do not delegate".▼
'''Voters vote delegable plurality-style votes or non-delegable approval-style votes'''
# Any "bullet vote" - that is, a ballot which votes for only one candidate - is considered a "delegable vote" for a candidate. These votes are tallied for each candidate. Of course, any ballots which vote for "do not delegate" or any other invalid write-in are not considered as bullet votes.▼
# Approval totals for each candidate are also tallied. These preliminary results are announced, along with the number of "delegable votes" each candidate has.▼
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# If any candidate has an absolute majority at this point, or cannot possibly be beaten by any other candidate using the delegable votes and candidate rankings available, then they win immediately.▼
# There is a brief period - perhaps a week - for candidates to analyse and negotiate based on these preliminary results. (Actually, the correct strategies for all candidates and the resulting winner will already be obvious. Usually, all candidates except this winner would concede as soon as preliminary results are announced. However, for the occasional candidate inclined to act irrationally in a way that matters - say, by not delegating to an ally, even though the alternative is to see an enemy elected - this interim period would give them a chance to rethink things and come into reason.)▼
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# All candidates, in descending order of the number of delegable votes they have, publicly delegate their votes; that is, they choose a number N, and their "delegable vote" total is added to the approval totals of their top N favorites as announced in step one. They may choose N=0 - that is, not delegate their vote to anyone. They may not choose N=(number of candidates) - that is, delegate their votes to everyone. If they declared a tie in their preferences, they must either delegate to all candidates whom they included in that tie (as well as anyone they ranked above that), or none of them. (Note: Doing this in descending order prevents a weaker candidate from making an ultimatum to a stronger candidate, and thus strengthens the strategic equilibrium of any pairwise champion there is.)▼
# The highest total wins.▼
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'''Candidates delegate their delegable votes according with their delegation order'''
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'''Highest total wins'''
=== Optional rules ===
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