<p>Ranked choice voting (RCV) is one of the fastest-growing electoral reforms in the United States, yet few scholars have considered the degree to which RCV could be improved with a different elimination procedure. This paper examines RCV with three different elimination procedures: plurality elimination, negative plurality elimination, and Borda elimination. After some analytical observations, we examine how often RCV with each of these procedures violates three criteria separately: the Condorcet winner criterion, independence of eliminated alternatives, and monotonicity using data from RCV elections in the United States as well as simulated data from the Impartial Culture condition with some trailing rankings removed. Our results show that while there are few differences in US election data, Borda elimination consistently outperforms the traditional plurality elimination by a statistically significant amount in our simulations. Nevertheless, the magnitude of those difference are often small.</p>

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Ranked choice voting with different elimination procedures

  • Spencer Katzman,
  • Keith L. Dougherty

摘要

Ranked choice voting (RCV) is one of the fastest-growing electoral reforms in the United States, yet few scholars have considered the degree to which RCV could be improved with a different elimination procedure. This paper examines RCV with three different elimination procedures: plurality elimination, negative plurality elimination, and Borda elimination. After some analytical observations, we examine how often RCV with each of these procedures violates three criteria separately: the Condorcet winner criterion, independence of eliminated alternatives, and monotonicity using data from RCV elections in the United States as well as simulated data from the Impartial Culture condition with some trailing rankings removed. Our results show that while there are few differences in US election data, Borda elimination consistently outperforms the traditional plurality elimination by a statistically significant amount in our simulations. Nevertheless, the magnitude of those difference are often small.