Abstract
We examine 17 preferential ballot voting methods using three criteria: (1) mathematical properties, (2) game-theoretic considerations, and (3) practical real-world outcomes. The challenge of comparing and contrasting the real-world outcomes of different voting methods is the sheer number of possible elections that can exist. We combat this challenge by introducing a new way of visualizing outcomes in what we dub a “DNA sequence” for each voting method.
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Notes
“Later no Harm” describes the case when endorsing candidates other than one’s favorite will not hurt one’s favorite candidate later in the election; “Favorite Betrayal” is the practice of voting for a candidate other than one’s favorite because the latter is perceived to not have a realistic chance of winning.
The “Domination Paradox” is the case when the majority-preferred candidate is nevertheless less passionately preferred by that majority than is a minority candidate by their supporters.
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HLB and ABA wrote the main manuscript text and both authors reviewed the manuscript.
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Aazami, A.B., Bray, H.L. Classification of preferential ballot voting methods. Const Polit Econ 34, 510–523 (2023). https://doi.org/10.1007/s10602-022-09384-8
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DOI: https://doi.org/10.1007/s10602-022-09384-8