Scoring rules, ballot truncation, and the truncation paradox

نویسندگان

چکیده

A voting rule that permits some voters to favor a candidate by revealing only the initial segment of their sincere rankings is said be vulnerable truncation paradox. In this paper, we consider four models for counting truncated ballots, optimistic, pessimistic (the most common), averaged, and round-down. Under impartial anonymous culture assumption, choice model generally has real impact on truncation-paradox vulnerability, but exceptions exist. When election decided one-shot scoring rule, optimistic invulnerable paradox, all other are vulnerable. We identify new rules immune such as Modified Borda Count. To obtain more complete picture processing model, assess likelihood paradox in three-candidate elections with large electorates, focusing not also one-by-one or below-average elimination. Our assessment confirms ballots may really matter.

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ژورنال

عنوان ژورنال: Public Choice

سال: 2022

ISSN: ['1573-7101', '0048-5829']

DOI: https://doi.org/10.1007/s11127-022-00972-8