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Social Choice and Welfare

, Volume 29, Issue 2, pp 229–245 | Cite as

Policy convergence under approval and plurality voting: the role of policy commitment

  • Arnaud Dellis
  • Mandar Oak
Original Paper

Abstract

Proponents of Approval Voting argue that this electoral rule leads to more centrist outcomes compared to Plurality Voting. This claim has been substantiated by scholarly work using spatial models of political competition. We revisit this issue in the context of a model of political competition in which (1) candidates are policy-motivated; (2) candidacy decisions are endogenous; and (3) candidates can credibly commit to implementing any policy. Under these assumptions we find the opposite to be true – Plurality Voting yields convergence to the median voter’s ideal policy but Approval Voting may not. We argue that this result is driven by the differential incentives for candidate entry under the two voting rules. Our results suggest that whether Approval Voting yields more centrist outcomes vis-á-vis Plurality Voting depends on the possibility of policy commitment on the part of the candidates.

Keywords

Median Voter Political Competition Vote Strategy Policy Position Approval Vote 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Alesina A (1988) Credibility and policy convergence in a two-party system with rational voters. Am Econ Rev 78:796–805Google Scholar
  2. Alesina A, Rosenthal H (2000) Polarized platforms and moderate policies with checks and balances. J Public Econ 75:1–20CrossRefGoogle Scholar
  3. Baron D (1994) Electoral competition with informed and uninformed voters. Am Polit Sci Rev 88:33–47CrossRefGoogle Scholar
  4. Bernhardt D, Ingberman D (1985) Candidate reputations and the ‘incumbency effect’. J Public Econ 27:47–67CrossRefGoogle Scholar
  5. Besley T, Coate S (1997) An economic model of representative democracy. Q J Econ 112:85–114CrossRefGoogle Scholar
  6. Brams S, Fishburn P (1978) Approval voting. Am Polit Sci Rev 72:831–847CrossRefGoogle Scholar
  7. Brams S, Fishburn P (1983) Approval voting. Birkhauser, BostonGoogle Scholar
  8. Brams S, Nagel J (1991) Approval voting in practice. Public Choice 71:1–17CrossRefGoogle Scholar
  9. Callander S (2005) Electoral competition in heterogenous districts. J Polit Econ 113:1116–1145CrossRefGoogle Scholar
  10. Calvert R (1985) Robustness of the multidimensional voting model: candidate motivations, uncertainty, and convergence. Am J Polit Sci 29:69–95CrossRefGoogle Scholar
  11. Cox G (1985) Electoral equilibrium under approval voting. Am J Polit Sci 29:112–118CrossRefGoogle Scholar
  12. Cox G (1987) Electoral equilibrium under alternative voting institutions. Am J Polit Sci 31:82–108CrossRefGoogle Scholar
  13. Dellis A, Oak M (2006) Approval voting with endogenous candidates. Games Econ Behav 54:47–76CrossRefGoogle Scholar
  14. Fauli-Oller R, Ok E, Ortuno-Ortin I (2003) Delegation and polarization of platforms in political competition. Econ Theory 22:289–309CrossRefGoogle Scholar
  15. Feddersen T, Sened I, Wright S (1990) Rational voting and candidate entry under plurality rule. Am J Polit Sci 34:1005–1016CrossRefGoogle Scholar
  16. Gans J, Smart M (1996) Majority voting with single-crossing preferences. J Public Econ 59:219–237CrossRefGoogle Scholar
  17. Laslier J-F (2005) Strategic approval voting in a large electorate. MimeoGoogle Scholar
  18. Martinelli C (2001) Elections with privately informed parties and voters. Public Choice 108:147–167CrossRefGoogle Scholar
  19. Messner M, Polborn M (2004) Paying politicians. J Public Econ 88:2423–2445CrossRefGoogle Scholar
  20. Myerson R (2002) Comparison of scoring rules in Poisson voting games. J Econ Theory 103:219–251CrossRefGoogle Scholar
  21. Myerson R, Weber R (1993) A theory of voting equilibria. Am Polit Sci Rev 87:102–114CrossRefGoogle Scholar
  22. Osborne M (1993) Candidate positioning and entry in a political competition. Games Econ Behav 5:133–151CrossRefGoogle Scholar
  23. Osborne M (1995) Spatial models of political competition under plurality rule: a survey of some explanations of the number of candidates and the positions they take. Can J Econ 28:261–301CrossRefGoogle Scholar
  24. Osborne M (2000) Entry-deterring policy differentiation by electoral candidates. Math Soc Sci 40:41–62CrossRefGoogle Scholar
  25. Osborne M, Slivinski A (1996) A model of political competition with citizen candidates. Q J Econ 111:65–96CrossRefGoogle Scholar
  26. Palfrey T (1984) Spatial equilibrium with entry. Rev Econ Stud 51:139–156CrossRefGoogle Scholar
  27. Roemer J (1997) Political-economic equilibrium when parties represent constituents: the unidimensional case. Soc Choice Welfare 14:479–502CrossRefGoogle Scholar
  28. Roemer J (2001) Political competition Theory and applications. Harvard University Press, CambridgeGoogle Scholar
  29. Weber S (1992) On hierarchical spatial competition. Rev Econ Stud 59:407–425CrossRefGoogle Scholar
  30. Weber S (1998) Entry deterrence in electoral spatial competition. Soc Choice Welfare 15:31–56CrossRefGoogle Scholar
  31. Wittman D (1983) Candidate motivation: a synthesis of alternatives. Am Polit Sci Rev 77:142–157CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of EconomicsUniversity of Hawaii – ManoaHonoluluUSA
  2. 2.Department of EconomicsWilliams CollegeWilliamstownUSA

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