Why approval voting is unworkable in contested elections

Abstract

Approval voting is a method of voting to elect single winners that has adherents among some voting theorists, but it is unworkable in contested elections in which voters have a stake in the outcome. Once aware of how approval voting works, strategic voters will always earn a significant advantage over less informed voters. This problem with strategic voting far outweighs any other factor when evaluating the potential use of approval voting in governmental elections - and is also true of range voting, score voting, the Borda Count and Bucklin voting.