Ranked pairs (or RP), sometimes called the Tideman method, is a tournament-style system of ranked-choice voting first proposed by Nicolaus Tideman in 1987.[1][2]
Ranked pairs begins with a round-robin tournament, where the one-on-one margins of victory for each candidate are compared to find a majority winner. If there is a Condorcet cycle (a rock-paper-scissors sequence A > B > C > A), the cycle is broken by dropping nearly-tied elections, i.e. the closest elections in the cycle.[3]
^Tideman, T. N. (1987-09-01). "Independence of clones as a criterion for voting rules". Social Choice and Welfare. 4 (3): 185–206. doi:10.1007/BF00433944. ISSN 1432-217X. S2CID 122758840.
^Schulze, Markus (October 2003). "A New Monotonic and Clone-Independent Single-Winner Election Method". Voting matters (www.votingmatters.org.uk). 17. McDougall Trust. Archived from the original on 2020-07-11. Retrieved 2021-02-02.
^Munger, Charles T. (2022). "The best Condorcet-compatible election method: Ranked Pairs". Constitutional Political Economy. 34 (3): 434–444. doi:10.1007/s10602-022-09382-w.
Rankedpairs (or RP), sometimes called the Tideman method, is a tournament-style system of ranked-choice voting first proposed by Nicolaus Tideman in...
The term ranked voting, also known as preferential voting or ranked-choice voting, pertains to any voting system where voters indicate a rank to order...
also finishes ahead of C. So when rankedpairs considers the third largest majority, who rank C over A, their lower-ranked candidate A has already been placed...
political philosophy. In 1987, he devised the voting system called "rankedpairs" (or the "Tideman method" or simply "RP"), which is a type of Condorcet...
is the identification of all undominated pairs implicitly ranked as corollaries of the explicitly rankedpairs. Thus, given a2 > a1 (i.e. good education...
lower-ranking category. A hand is ranked within its category using the ranks of its cards. Individual cards are ranked, from highest to lowest: A, K, Q...
election methods: The main difference between the Schulze method and the rankedpairs method can be seen in this example: Suppose the MinMax score of a set...
Arrow's theorem, all ranked-choice voting systems are vulnerable to spoiler effects. However, the susceptibility of different ranked systems varies greatly...
voting). With 3 candidates, Minimax Condorcet and its variants (including RankedPairs and Schulze's method) satisfy the participation criterion. However, with...
(Copeland's, Dodgson's, Kemeny-Young, Maximal lotteries, Minimax, Nanson's, Rankedpairs, Schulze), the Coombs' method and positional voting. There are also several...
maximum of two pairs if both were ranked in the top eight, while the remaining NOCs were entitled to one until the quota of 16 highest-rankedpairs was filled...
multiple choice cumulative (more than one vote for one candidate possible) ranked (ordinal voting) score (cardinal voting) Number of votes/voter Number of...
hierarchy within the named pairs. The pairs are considered to tell the story of creation: Gee Joon (至尊) is the highest rankedpair, and is the Supreme Creator...
candidates ranked lower. In the original variant, the lowest-ranked candidate gets 0 points, the next-lowest gets 1 point, etc., and the highest-ranked candidate...
ranking is A > B > C. Thus, A is elected Rankedpairs winner by the first group of voters. Now, the Rankedpairs winner for the second group of voters is...
maximum of two pairs if both are ranked in the top eight, while the remaining NOCs are entitled to one until the quota of 16 highest-rankedpairs is filled...
conflicts with the more common meaning. It also has similarities to other ranked-choice systems. Unlike the contingent vote, systems like instant-runoff...
of two pairs if both were ranked in the top eight, while the remaining NOC's were entitled to one until the quota of 16 highest-rankedpairs was filled...
absolute grade and all others below that grade. In Majority Judgment, RankedPairs, and Schulze voting, there is always a regret-free semi-honest ballot...
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