Fractional, stochastic, or weighted social choice is a branch of social choice theory in which the collective decision is not a single alternative, but...

Social choice theory is a branch of welfare economics that analyzes methods of combining individual opinions, beliefs, or preferences to reach a collective...

welfare economics and social choice theory, a social welfare function—also called a social ordering, ranking, utility, or choice function—is a function...

In fractional social choice, fractional approval voting refers to a class of electoral systems using approval ballots (each voter selects one or more candidate...

this to social choice, following Anthony Downs' approach of continuous policy space with veto players concerned solely about proximity of choices to their...

which horse they thought would be first past the finishing post). In social choice, FPP is generally treated as a degenerate variant of ranked voting,...

a strong incentive to bullet vote to avoid a second choice helping to eliminate the first choice. A united majority of voters in plurality-at-large can...

their intuitive definition, quota methods are generally disfavored by social choice theorists as a result of apportionment paradoxes. In particular, the...

below. Soh, Leen-Kiat (2017-10-04). "Voting: Preference Aggregating & Social Choice [CSCE475/875 class handout]" (PDF). Brandt, Felix (2009-07-17). "Some...

In social choice, the negative responsiveness, perversity, or additional support paradox is a pathological behavior of some voting rules, where a candidate...

have implemented, or allowed legislatures to implement, ranked choice voting. Ranked choice voting has also been banned in eleven states. Approval voting...

Method of equal shares Fractional social choice Direct representation Interactive representation Liquid democracy Fractional approval voting Maximal...

more-extreme alternative to win. This effect was first predicted by social choice theorists in the 1940s and 50s, and has since been documented in various...

In economics and social choice, a function satisfies anonymity, neutrality, or symmetry if the rule does not discriminate between different participants...

Public Choice. 159 (3–4): 327–339. doi:10.1007/s11127-014-0169-z. ISSN 0048-5829. S2CID 155023975. Eerik, Lagerspetz (2015-11-26). Social choice and democratic...

In social choice theory and politics, a spoiler is a losing candidate who affects the results of an election simply by participating, a situation that...

In social choice theory, the majority rule (MR) is a social choice rule which says that, when comparing two options (such as bills or candidates), the...

city such that their most liked choice got 5 stars, and least liked choice got 0 stars, with the intermediate choices getting an amount proportional to...

directors. The study of formally defined electoral methods is called social choice theory or voting theory, and this study can take place within the field...

social choice rules. The study of these rules and what makes them good or bad is the subject of a branch of welfare economics known as social choice theory...

STV use fractional transfers of ballots to eliminate uncertainty. However, STV elections with whole vote reassignment cannot handle fractional quotas,...

(February 2013). "Ramon Llull: from 'Ars electionis' to social choice theory". Social Choice and Welfare. 40 (2): 317–328. doi:10.1007/s00355-011-0598-2...

described in 1977 by Allan Gibbard, who showed it to be the unique social choice rule that treats all voters equally while still being strategyproof...

The single transferable vote (STV) or proportional-ranked choice voting (P-RCV), is a multi-winner electoral system in which each voter casts a single...

study of voting rules falls under the branches of economics called social choice and mechanism design, but the question has also engendered substantial...

voters in the first column prefer Memphis as their 1st choice, Nashville as their 2nd choice, etc. As these ballot preferences are converted into pairwise...

By concentrating their votes on a small number of candidates of their choice, voters in the minority can win some representation—for example, a like-minded...

In social choice theory, Condorcet's voting paradox is a fundamental discovery by the Marquis de Condorcet that majority rule is inherently self-contradictory...

Method of equal shares Fractional social choice Direct representation Interactive representation Liquid democracy Fractional approval voting Maximal...

Tangian, Andranik (2008). "A mathematical model of Athenian democracy". Social Choice and Welfare. 31 (4): 537–572. doi:10.1007/s00355-008-0295-y. S2CID 7112590...