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| | Monotonicity criterion - the free encyclopedia (Site not responding. Last check: 2007-11-02) |
 | | A voting system is monotonic if it satisfies the followingso-called monotonicity criterion given below. |
 | | Clearly, non-monotonicity is very counterintuitive, althoughsome do defend such systems (see Instant-runoff voting).Furthermore, although all voting systems are vulnerable to tacticalvoting, systems which fail the monotonicity criterion suffer an unusual form, where voters might try to elect their candidateby voting against that candidate. |
 | | Plurality voting, Majority Choice Approval, Borda count,Cloneproof SchwartzSequential Dropping, and Maximize AffirmedMajorities are monotonic, while Coombs' method and Instant-runoff voting are not. |
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