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The Case for Responsible Parties

  • DOI:
  • Published online: 01 November 2009

Electoral platform convergence is perceived unfavorably by both the popular press and many academic scholars. Arguably, to paraphrase, “it does not provide enough choice” between candidates. This article provides a formal account of the perceived negative effects of platform convergence. We show that when parties do not know voters' preferences precisely, all voters ex ante prefer some platform divergence to convergence at the ex ante median. After characterizing the unique symmetric equilibrium of competition between responsible (policy-motivated) parties, we conclude that all voters ex ante prefer responsible parties to opportunistic (purely office-motivated) ones when parties are sufficiently ideologically polarized that platforms diverge, but not so polarized that they diverge excessively. However, greater polarization increases the scope for office benefits as an instrument for institutional design. We calculate the socially optimal level of platform divergence and show that office benefits can be used to achieve this first-best outcome, if parties are sufficiently ideologically polarized.

Corresponding author
Dan Bernhardt is IBE Distinguished Professor of Economics and Finance, University of Illinois at Urbana-Champaign, 1106 S. Prospect Avenue, Champaign, IL 61820 (
John Duggan is Professor of Political Science and of Economics, W. Allen Wallis Institute of Political Economy, University of Rochester, Rochester, NY 14627 (
Francesco Squintani is Professore Ordinario di Economia Politica, Universita' degli Studi di Brescia; and, Professor of Economics, University of Essex, Wivenhoe Park, Colchester, Essex CO4 3SQ, United Kingdom (
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Enriqueta Aragones , and Thomas R. Palfrey . 2002. “Mixed Equilibrium in a Downsian Model with a Favored Candidate.” Journal of Economic Theory 103: 131–61.

Mark Bagnoli , and Theodore Bergstrom . 2005. “Log-Concave Probability and Its Applications.” Economic Theory 26: 445–69.

Larry M. Bartels 1996. “Uninformed Votes: Information Effects in Presidential Elections.” American Journal of Political Science 40: 194230.

Daniel Bernhardt , John Duggan , and Francesco Squintani . 2007. “Electoral Competition with Privately Informed Candidates.” Games and Economic Behavior 58: 129.

Daniel Bernhardt , John Duggan , and Francesco Squintani . 2009. “Private Polling and Voter Welfare.” Journal of Economic Theory 144: 2021–56.

Timothy Besley , and Stephen Coate . 1997. “An Economic Model of Representative Democracy.” Quarterly Journal of Economics 112: 85114.

Steven Callander , and Simon Wilkie . 2007. “Lies, Damned Lies, and Political Campaigns.” Games Economic Behavior 60: 262–86.

Randall Calvert . 1985. “Robustness of the Multidimensional Voting Model: Candidate Motivations, Uncertainty, and Convergence.” American Journal of Political Science 29: 6995.

Philip Converse . 1962. “Information Flow and the Stability of Partisan Attitudes.” Public Opinion Quarterly 26: 578–99.

Daniel Diermeier , Michael Keane , and Antonio Merlo . 2005. “A Political Economy Model of Congressional Careers.” American Economic Review 95: 347–73.

Martin Gilens . 2001. “Political Ignorance and Collective Policy Preferences.” American Political Science Review 95: 379–96.

Timothy Groseclose . 2001. “A Model of Candidate Location When One Candidate Has a Valence Advantage.” American Journal of Political Science 45: 862–86.

Harold Hotelling . 1929. “Stability in Competition.” Economic Journal 39: 4157.

Navin Kartik , and Preston McAfee . 2007. “Signaling Character in Electoral Competition.” American Economic Review 97: 852–70.

V. O. Key 1966. The Responsible Electorate. New York: Vintage Books.

Martin J. Osborne , and Al Slivinski . 1996. “A Model of Political Competition with Citizen-Candidates.” Quarterly Journal of Economics 111: 6596.

Benjamin I. Page , and Robert Y. Shapiro . 1992. The Rational Public: Fifty Years of Trends in Americans' Policy Preferences. Chicago: The University of Chicago Press.

Thomas R. Palfrey 1984. “Spatial Equilibrium with Entry.” Review of Economic Studies 51: 139–56.

Alejandro Saporiti . 2008. “Existence and Uniqueness of Nash Equilibrium in Electoral Competition Games: The Hybrid Case.” Journal of Public Economic Theory 10: 827–57.

John R. Zaller , and Stanley Feldman . 1992. “A Simple Theory of the Survey Response: Answering Questions versus Revealing Preferences.” American Journal of Political Science 36: 579616.

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American Political Science Review
  • ISSN: 0003-0554
  • EISSN: 1537-5943
  • URL: /core/journals/american-political-science-review
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