Coombs' method

<p>Coombs' method is a <a href="/facts/Ranked_voting_systems/z91UKPCs">ranked voting system</a>. Like <a href="/facts/Instant-runoff_voting/td1Q35Wg">instant-runoff (IRV-RCV)</a>, Coombs' method is a <a href="/facts/Sequential_elimination_method/2DnPnr1e">sequential-loser method</a>, where the last-place finisher according to one method is eliminated in each round. However, unlike in instant-runoff, each round has electors voting against their least-favorite candidate; the candidate ranked last by the most voters is eliminated.
</p><p>The method fails most <a href="/facts/Voting_system_criteria/e6zvx3Bo">voting system criteria</a>, including <a href="/facts/Condorcet_winner_criterion/p1pKVX0k">Condorcet's majority criterion</a>, <a href="/facts/Monotonicity_criterion/BruDjw6G">monotonicity</a>, <a href="/facts/Participation_criterion/racmDXYL">participation</a>, and <a href="/facts/Independence_of_clones_criterion/IcCrkyt6">clone-independence</a>. However, it does satisfy Black's single-peaked <a href="/facts/Median_voter_property/8JRxIxP5">median voter criterion</a>.: prop. 2 
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Coombs' method open-in-new

Coombs' method