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SODA voting (Simple Optionally-Delegated Approval): Difference between revisions
SODA voting (Simple Optionally-Delegated Approval) (view source)
Revision as of 22:46, 29 June 2011
, 13 years ago→Procedure
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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 or two - for candidates to analyse and negotiate based on these preliminary results. (Actually, in the broad majority of cases, 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.)
# All candidates
# The highest total wins.
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Optional rule 4.5 (between 4 and 5): If any candidate has less than 5% (of the total votes) as delegable votes, and is not one of the top two in total votes, then those votes are automatically delegated to the first candidate on their approval list who has more than 5% delegable votes or more than 20% total votes. They will be further delegated to the largest sequence from their original candidate's preference order which is contained in their receiving candidate's delegations. So if they originally went to A who preferred alphabetically, then and they're passed to D who delegates to BCEGH, they'll end up approving ABCDE. This rule prevents giving excessive kingmaker power to a tiny faction. Note that all delegation is still non-exclusive, approval-style.
This rule would help make this system more attractive to major-party politicians. But it's a principled rule, not just a sop to the major parties. Consider the "kingmaker" case: in a basically 50/50 split, some tiny party has the balance of votes, and manages to extract concessions far bigger than their base of support justifies, just in order to [not] delegate those votes.
==== More-sophisticated final win criterion ====
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