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Minimal voting paradoxes

Author

Listed:
  • Felix Brandt

    (9184Technische Universität München, Germany)

  • Marie Matthäus

    (Technische Universität München, Germany)

  • Christian Saile

    (Technische Universität München, Germany)

Abstract

Voting paradoxes date back to the origin of social choice theory in the 18th century, when the Chevalier de Borda pointed out that plurality—then and now the most common voting rule—may elect a candidate who loses pairwise majority comparisons against every other candidate. Since then, a large number of similar, seemingly paradoxical, phenomena have been observed in the literature. As it turns out, many paradoxes only materialize under some rather contrived circumstances and require a certain number of voters and candidates. In this paper, we leverage computational optimization techniques to identify the minimal numbers of voters and candidates that are required for the most common voting paradoxes to materialize. The resulting compilation of voting paradoxes may serve as a useful reference to social choice theorists as well as an argument for the deployment of certain rules when the numbers of voters or candidates are severely restricted.

Suggested Citation

  • Felix Brandt & Marie Matthäus & Christian Saile, 2022. "Minimal voting paradoxes," Journal of Theoretical Politics, , vol. 34(4), pages 527-551, October.
    • Handle: RePEc:sae:jothpo:v:34:y:2022:i:4:p:527-551
    DOI: 10.1177/09516298221122104
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