Abstract
The Gibbard-Satterthwaite theorem states that every nondictatorial election rule among at least three alternatives can be strategically manipulated. We prove a quantitative version of the Gibbard-Satterthwaite theorem: a random manipulation by a single random voter will succeed with a nonnegligible probability for any election rule among three alternatives that is far from being a dictatorship and from having only two alternatives in its range.
Original language | English |
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Pages (from-to) | 934-952 |
Number of pages | 19 |
Journal | SIAM Journal on Computing |
Volume | 40 |
Issue number | 3 |
DOIs | |
State | Published - 2011 |
Keywords
- Algorithmic game theory
- Arrow theorem
- Gibbard-Satterthwaite theorem