• Thumbnail for Expanding approvals rule
    An expanding approvals rule (EAR) is a rule for multi-winner elections, which allows agents to express weak ordinal preferences (i.e., ranking with indifferences)...
    5 KB (628 words) - 21:35, 3 November 2024
  • Thumbnail for Proportionality for solid coalitions
    legislature. Examples of quota-proportional methods include the expanding approvals rule, the method of equal shares, and the single transferable vote....
    7 KB (967 words) - 22:17, 26 May 2025
  • Thumbnail for Electoral system
    the Expanding Approvals Rule. In addition to the specific method of electing candidates, electoral systems are also characterised by their wider rules and...
    57 KB (7,248 words) - 03:08, 18 May 2025
  • Thumbnail for Approval voting
    approval, with voters expressing 1.6 approvals per ballot, and the two commissioners were elected from a field of 15 candidates, with 3.1 approvals per...
    60 KB (6,032 words) - 21:44, 1 June 2025
  • Thumbnail for Majority rule
    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...
    20 KB (1,970 words) - 19:36, 24 June 2025
  • Thumbnail for Multiwinner approval voting
    Such methods include proportional approval voting, sequential proportional approval voting, Phragmen's voting rules and the method of equal shares. In...
    22 KB (2,632 words) - 21:06, 23 May 2025
  • Thumbnail for Bucklin voting
    Plurality voting system Instant-runoff voting Approval voting Score voting Borda count Expanding Approvals Rule Specific Hermann, J. R. "A Remembrance of...
    12 KB (1,328 words) - 00:40, 7 March 2025
  • Thumbnail for Condorcet winner criterion
    criterion: Plurality voting Instant-runoff voting Borda count Approval Voting Coombs' rule Bucklin voting (and the closely related median voting) Score...
    18 KB (2,303 words) - 21:25, 19 June 2025
  • Thumbnail for Sortition
    George (June 12, 2014). "12 Futuristic Forms of Government That Could One Day Rule the World". Gizmodo. Retrieved October 18, 2024. Brian Martin (Fall 1992)...
    46 KB (5,582 words) - 13:01, 23 May 2025
  • Thumbnail for Primary election
    primaries, as those states often build momentum for leading candidates and rule out trailing candidates long before the rest of the country has even had...
    68 KB (8,024 words) - 06:52, 24 June 2025
  • Thumbnail for Vote-ratio monotonicity
    B {\displaystyle B} gains a seat. An apportionment method violating this rule may encounter population paradoxes. A particularly severe variant, where...
    7 KB (748 words) - 21:30, 26 May 2025
  • Thumbnail for Quadratic voting
    majority—where minority preferences are by default repressed since under majority rule, majority cooperation is needed to make any change. Quadratic voting prevents...
    28 KB (3,605 words) - 18:11, 23 May 2025
  • Thumbnail for Spoiler effect
    with all three affected by center-squeeze and vote splitting. Majority-rule (or Condorcet) methods are only rarely affected by spoilers, which are limited...
    49 KB (5,065 words) - 05:32, 25 June 2025
  • Thumbnail for Coombs' method
    Coombs' method (redirect from Coombs rule)
    voting, Coombs' rule is extremely vulnerable to strategic voting. As a result, it is more often used as an example of a pathological voting rule than a serious...
    7 KB (826 words) - 15:37, 28 May 2025
  • Thumbnail for Comparison of voting rules
    public trust in elections.[failed verification] For example, while Schulze's rule performs well by many of the criteria above, it requires an involved explanation...
    44 KB (4,518 words) - 22:59, 19 June 2025
  • Thumbnail for Ranked voting
    a generalization of Condorcet's result on the impossibility of majority rule. It demonstrates that every ranked voting algorithm is susceptible to the...
    26 KB (3,148 words) - 18:16, 26 June 2025
  • Thumbnail for Smith set
    is a voting system criterion that formalizes a stronger idea of majority rule than the Condorcet criterion. A voting system satisfies the Smith criterion...
    17 KB (2,322 words) - 22:20, 19 June 2025
  • Thumbnail for STAR voting
    Decision making Democracy Relative utilitarianism Highest median voting rules—similar voting method, based on medians instead of averages and verbal appreciations...
    17 KB (1,859 words) - 02:51, 26 June 2025
  • Thumbnail for Center squeeze
    A center squeeze is a kind of spoiler effect shared by rules like the two-round system, plurality-with-primaries, and ranked choice voting. In a center...
    48 KB (4,967 words) - 03:41, 22 June 2025
  • Thumbnail for Single transferable vote
    other proportional ranked voting methods including CPO-STV, the Expanding approvals rule, and Schulze STV. See also Instant-runoff voting#Terminology. Based...
    138 KB (16,437 words) - 22:00, 25 June 2025
  • Thumbnail for Rated voting
    Rated voting (redirect from Grading rule)
    different proportional cardinal rules, often called approval-based committee rules. Phragmen's method Proportional approval voting (Thiele's method) Method...
    14 KB (1,597 words) - 01:41, 24 May 2025
  • Thumbnail for Voting
    while mathematicians and economists call them social choice rules. The study of these rules and what makes them good or bad is the subject of a branch...
    30 KB (3,765 words) - 13:53, 26 May 2025
  • Thumbnail for Borda count
    The Borda method or order of merit is a positional voting rule that gives each candidate a number of points equal to the number of candidates ranked below...
    44 KB (5,488 words) - 18:57, 21 June 2025
  • Thumbnail for Justified representation
    are approved by more voters cost less than those that garnered fewer approvals. Bei, Lu and Suksompong extend the committee election model to a setting...
    39 KB (5,256 words) - 23:29, 6 January 2025
  • Thumbnail for May's theorem
    that the number of alternatives that a rule can deal with successfully is less than the Nakamura number of the rule. The Nakamura number of simple majority...
    6 KB (658 words) - 01:34, 26 May 2025
  • Thumbnail for Median voter theorem
    population would prefer. Similar median voter theorems exist for rules like score voting and approval voting when voters are either strategic and informed or if...
    35 KB (4,155 words) - 18:36, 25 June 2025
  • Thumbnail for Arrow's impossibility theorem
    the requirements of rational choice. Specifically, Arrow showed no such rule can satisfy the independence of irrelevant alternatives axiom. This is the...
    69 KB (6,513 words) - 01:58, 25 June 2025
  • Thumbnail for Condorcet paradox
    paradox is a fundamental discovery by the Marquis de Condorcet that majority rule is inherently self-contradictory. The result implies that it is logically...
    26 KB (3,469 words) - 11:09, 24 June 2025
  • Thumbnail for Droop quota
    declared elected. In proportional quota-based systems such as STV or expanding approvals, these excess votes can be transferred to other candidates to prevent...
    19 KB (2,322 words) - 14:21, 21 June 2025
  • Thumbnail for Two-round system
    common single-winner electoral system worldwide. Despite this, runoff-based rules like the two-round system and RCV have faced criticism from social choice...
    43 KB (4,899 words) - 15:58, 9 June 2025