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Expanding Approvals Rule: Difference between revisions
Marking possible merge with Proportionality for Solid Coalitions and Bucklin Transferable Vote
(Added more details about the EAR method and clarified some mischaracterization of the EAR method (which is a family of rules rather than a specific rule). I also added a summary of the properties of EAR according to the authors' publication. Finally, I corrected an error that appeared in the notes (the 2-winner example).) |
(Marking possible merge with Proportionality for Solid Coalitions and Bucklin Transferable Vote) |
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{{merge|Proportionality for Solid Coalitions|Bucklin Transferable Vote}}
The '''Expanding Approvals Rule''' ('''EAR'''), can be thought of as a sequential PR version of [[Bucklin voting|Bucklin Voting]] which can use the Droop quota. It works by first examining the 1st rank; any candidate with a Droop quota of 1st choices is elected, and a Droop quota of the ballots ranking them 1st are spent. Then, it examines both the 1st and 2nd ranks; any candidate ranked either 1st or 2nd by a Droop quota of ballots is elected, and a Droop quota of the ballots ranking them either 1st or 2nd are spent. And so on, until all ranks have been examined.
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