| Participation Criterion |
Article Index for Participation |
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Information AboutParticipation Criterion |
| CATEGORIES ABOUT PARTICIPATION CRITERION | |
| voting system criteria | |
| mechanism design | |
Plurality Voting , Approval Voting , Range Voting , and the Borda Count all satisfy the participation criterion. All Condorcet Method s, Bucklin Voting , Majority Choice Approval , and IRV fail. If a voting system fails the participation criterion, then a particularly unusual strategy of not voting can, in at least some circumstances, help a voter's preferred choice win. The participation criterion for voting systems is one example of a Rational Participation Constraint for Social Choice Mechanisms in general. QUORUM REQUIREMENTS The most common failure of the participation criterion is not in the use of particular voting systems, but in simple yes or no measures that place Quorum requirements. A public Referendum , for example, that required majority approval and a certain number of voters to participate in order to pass would fail the participation criterion, as a minority of voters preferring the "no" option could cause the measure to fail by simply not voting rather than voting no. A referendum that required a minimum number of yes votes (not counting no's), by contrast, would pass the participation criterion. EXAMPLES Approval voting Borda count Instant-runoff voting Kemeny-Young method Minimax Condorcet Plurality voting system Range voting Ranked Pairs Two-round system Schulze method SEE ALSO REFERENCES
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