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Unformatted text preview: people to have equal say. How to design a voting rule to select candidates or policy proposals? A voting rule will take every person’s ranking of all alternatives & combine them into one societal ranking. Want this system to satisfy some set of “sensible” criteria. Arrow’s Theorem Universality: The voting rule must provide a complete ranking of all options given voters’ preferences Unanimity If every voter prefers A to B, then the voting rule should rank A above B Transitivity If A>B, and B>C, then A>C Independence of Irrelevant Alternatives If the voting rule ranks A above B, then changes in individuals’ rankings that do not affect the relative rankings of A and B should not affect the voting rule’s ranking of A above B Non-Dictatorship The voting rule should not just take one person’s preferences as the societal ranking...
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This note was uploaded on 11/18/2010 for the course GOV 310L taught by Professor Kieth during the Spring '07 term at University of Texas.
- Spring '07