Starts at: 2025-03-01 11:20AM
Ends at: 2025-03-01 11:35AM
Abstract:
The standard U.S. voting methods of plurality and ranked choice (or instant runoff) voting are susceptible to significant voting failures, including Condorcet and majority failures as well as monotonicity and no-show paradoxes. We investigate alternative ranked choice voting systems relating to the points-based Borda count which avoid monotonicity paradoxes, particularly variations based on how partial ballots are counted and on extending the values of the points assigned to each rank in the ballot. In this talk, we will discuss which voting failures are possible for each variation and then present an empirical study of 421 U.S. ranked choice elections from 2004 to 2023 where we determined the frequency of voting failures when using five Borda variations.