Dowdall system
E663406
The Dowdall system is a preferential voting method in which voters rank candidates and each ranking is weighted by the reciprocal of its position, favoring broadly acceptable candidates over merely first-choice favorites.
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
preferential voting system
ⓘ
ranked voting method ⓘ |
| aggregationLevel | candidate-level score totals across all ballots ⓘ |
| alternativeName | Dowdall method NERFINISHED ⓘ |
| appliesTo |
multi-winner elections
ⓘ
single-winner elections ⓘ |
| ballotType | ordinal ranking ⓘ |
| category | positional scoring rule ⓘ |
| designGoal |
favor broadly acceptable candidates
ⓘ
reduce dominance of mere first-choice favorites ⓘ |
| differenceFromBordaCount | uses reciprocal weights instead of linear weights ⓘ |
| favoringProperty | consensus candidates ⓘ |
| field |
social choice theory
ⓘ
voting theory ⓘ |
| firstPreferenceWeight | 1 ⓘ |
| informationRequired | complete or partial ranking of candidates ⓘ |
| monotonicityProperty | monotone under standard interpretations ⓘ |
| normativeFeature |
dampens marginal value of lower preferences via decreasing weights
ⓘ
rewards lower-ranked but widely ranked candidates ⓘ |
| nthPreferenceWeight | 1/n ⓘ |
| penalizingProperty | polarizing candidates ⓘ |
| relatedTo | Borda count NERFINISHED ⓘ |
| scoreAggregation | sum of weighted preference scores ⓘ |
| scoreComputation | each voter contributes 1/k to candidate ranked k-th ⓘ |
| secondPreferenceWeight | 1/2 ⓘ |
| thirdPreferenceWeight | 1/3 ⓘ |
| treatmentOfUnrankedCandidates | typically receive zero points ⓘ |
| uses | cardinal-like scores derived from ordinal rankings ⓘ |
| usesBallots | ranked ballots ⓘ |
| usesScoringVector | (1, 1/2, 1/3, 1/4, ...) for successive ranks ⓘ |
| voterAction | ranks candidates in order of preference ⓘ |
| weightingRule | reciprocal of rank position ⓘ |
| winnerCriterion | candidate with highest total Dowdall score ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.