Electronic Voting and Invalid Votes: Evidence from a Natural Experiment in Peru

Fernando M. Aragon, Alberto Chong and Angelo Cozzubo
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Fernando M. Aragon: Department of Economics, Simon Fraser University
Alberto Chong: Department of Economics, Georgia State University and Department of Economics, Universidad del Pacifico
Angelo Cozzubo: NORC at the University of Chicago and Department of Economics, Pontificia Universidad Catolica del Peru

International Center for Public Policy Working Paper Series, at AYSPS, GSU from International Center for Public Policy, Andrew Young School of Policy Studies, Georgia State University

Abstract: This paper examines the impact of electronic voting in Peru. Our empirical analysis exploits variation from a natural experiment to implement a difference-in-difference strategy. Our estimates indicate that electronic voting reduced the share of invalid votes by almost two-thirds. This reduction appears to be driven by fewer voter errors rather than changes in protest voting. However, in contrast to recent studies, we find no evidence of substantial changes in other electoral outcomes, such as turnout or vote composition.

Pages: 25 pages
Date: 2025-02
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