Single Winner Electoral Systems - Comparison of Single-member District Election Methods

Comparison of Single-member District Election Methods

Monotonic Condorcet Condorcet loser Majority Majority loser Mutual majority Smith ISDA Clone independence Reversal symmetry Polynomial time Participation, Consistency Later no harm
Schulze Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No
Ranked pairs Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No
Kemeny-Young Yes Yes Yes Yes Yes Yes Yes Yes No Yes No No No
Nanson No Yes Yes Yes Yes Yes Yes No No Yes Yes No No
Baldwin No Yes Yes Yes Yes Yes Yes No No No Yes No No
AV/IRV No No Yes Yes Yes Yes No No Yes No Yes No Yes
Borda Yes No Yes No Yes No No No No Yes Yes Yes No
Bucklin Yes No No Yes Yes Yes No No No No Yes No No
Coombs No No Yes Yes Yes Yes No No No No Yes No ?
MiniMax Yes Yes No Yes No No No No No No Yes No No
Plurality Yes No No Yes No No No No No No Yes Yes Yes
Anti-plurality Yes No No No Yes No No No No No Yes Yes ?
Contingent voting No No Yes Yes Yes No No No No No Yes No Yes
Sri Lankan contingent voting No No No Yes No No No No No No Yes No Yes
Supplementary voting No No No Yes No No No No No No Yes No Yes

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