> Ranking the voting systems: STAR Voting > Approval Voting > Ranked Choice Voting > Plurality (“pick only one”) voting.
I’m going to disagree. For essentially single-winner, public, candidate, secret ballot elections:
Any Condorcet method* > Bucklin Voting* (without limited # of ranks) > Instant Runoff Voting* > Majority-Runoff** > Plurality Voting** > Approval***, Score***, or STAR*** Voting (or any other *** system)
For public, secret ballot, legislative elections:
Mixed Member Proportional (MMP) using PR-STV* + Party List for leveling) > MMP using any single-member district system + Party List for leveling > Single Transferrable Vote (PR-STV)* > Party List PR (optionally, using STV to minimize wasted votes, but vote-for-one is close behind) > single-member districts with single winner systems in the order above (but, compared to the preceding proportional systems, all are close enough as to make no real difference) > any system using some or all multimember constituencies (including staggered elections in the same district for multiple seats in the same body) not described earlier in this list.
For public, secret ballot, chief executive + designated successor elections:
The single winner methods, in the order above, modified to use ranked ballots if they don’t already, in two rounds where the first elects the chief executive, then that winner is eliminated from all ballots, then a second counting of the ballots is done to chose the designated successor > The single winner methods, in the order above, separately for each office > The single winner methods, i the order above, for slates of pairs of one candidate for each office > Plurality voting** in a two round system (with normal, vote-for-one ballots), where after a chief is chosen on the first round, the successor is chosen by eliminating all ballots for the prior winner and taking the highest remaining vote count.
(methods with * are ranked ballots methods, methods with ** are vote-for-one methods commonly in use in the US, methods with *** are either artificially limited-ranks or more-detail-than-ranks methods, which for candidate elections have no clear, unique honest mapping from actual preferences to ballot markings; they are very good when their particular system of ballot markings maps to something concrete – e.g., for approval for selecting group activities in non-secret-ballot elections where approving is a commitment to participate if that option is selected or disapproval forfeits the right to participate, or, for score voting, where chosen score maps to a commitment of resources in the event the scored item is chosen.)
I’m going to disagree. For essentially single-winner, public, candidate, secret ballot elections:
Any Condorcet method* > Bucklin Voting* (without limited # of ranks) > Instant Runoff Voting* > Majority-Runoff** > Plurality Voting** > Approval***, Score***, or STAR*** Voting (or any other *** system)
For public, secret ballot, legislative elections:
Mixed Member Proportional (MMP) using PR-STV* + Party List for leveling) > MMP using any single-member district system + Party List for leveling > Single Transferrable Vote (PR-STV)* > Party List PR (optionally, using STV to minimize wasted votes, but vote-for-one is close behind) > single-member districts with single winner systems in the order above (but, compared to the preceding proportional systems, all are close enough as to make no real difference) > any system using some or all multimember constituencies (including staggered elections in the same district for multiple seats in the same body) not described earlier in this list.
For public, secret ballot, chief executive + designated successor elections:
The single winner methods, in the order above, modified to use ranked ballots if they don’t already, in two rounds where the first elects the chief executive, then that winner is eliminated from all ballots, then a second counting of the ballots is done to chose the designated successor > The single winner methods, in the order above, separately for each office > The single winner methods, i the order above, for slates of pairs of one candidate for each office > Plurality voting** in a two round system (with normal, vote-for-one ballots), where after a chief is chosen on the first round, the successor is chosen by eliminating all ballots for the prior winner and taking the highest remaining vote count.
(methods with * are ranked ballots methods, methods with ** are vote-for-one methods commonly in use in the US, methods with *** are either artificially limited-ranks or more-detail-than-ranks methods, which for candidate elections have no clear, unique honest mapping from actual preferences to ballot markings; they are very good when their particular system of ballot markings maps to something concrete – e.g., for approval for selecting group activities in non-secret-ballot elections where approving is a commitment to participate if that option is selected or disapproval forfeits the right to participate, or, for score voting, where chosen score maps to a commitment of resources in the event the scored item is chosen.)