Party formation in single-issue politics
We study party formation in a general model of collective decision-making, modelling parties as agglomerations of policy positions championed by decision-makers. We show that in the presence of economies of party size and a one-dimensional policy space, players agglomerate into exactly two parties. This result does not depend on the magnitude of the economies of party size or sensitively on the nature of the individuals' preferences. Our analysis encompasses several models, including decision-making in committees with costly participation and representative democracy in which the legislature is elected by citizens, for a wide range of electoral systems including plurality voting and proportional representation. The result implies that a multiplicity of parties hinges on the presence of more than one significant political issue or of diseconomies of party size.
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- Martin Osborne & Jeffry Rosenthal & Matthew A. Turner, 1998.
"Meetings with costly participation,"
mturner-98-02, University of Toronto, Department of Economics.
- Martin J. Osborne & Al Slivinksi, 1995.
"A Model of Political Competition with Citizen-Candidates,"
Department of Economics Working Papers
1995-01, McMaster University.
- Martin J. Osborne & Al Slivinski, 1996. "A Model of Political Competition with Citizen-Candidates," The Quarterly Journal of Economics, Oxford University Press, vol. 111(1), pages 65-96.
- Nicolaus Tideman, 1995. "The Single Transferable Vote," Journal of Economic Perspectives, American Economic Association, vol. 9(1), pages 27-38, Winter.
- Ignacio Ortuno-Ortin & Anke Gerber, 1998. "Political compromise and endogenous formation of coalitions," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 15(3), pages 445-454.
- Jackson, Matthew O. & Moselle, Boaz, 2002.
"Coalition and Party Formation in a Legislative Voting Game,"
Journal of Economic Theory,
Elsevier, vol. 103(1), pages 49-87, March.
- Jackson, Matthew O. & Moselle, Boaz, 1998. "Coalition and Party Formation in a Legislative Voting Game," Working Papers 1036, California Institute of Technology, Division of the Humanities and Social Sciences.
- Gilat Levy, 2004.
"A model of political parties,"
LSE Research Online Documents on Economics
540, London School of Economics and Political Science, LSE Library.
- Tim Besley & Stephen Coate, .
"An Economic Model of Representative Democracy,"
Penn CARESS Working Papers
ecf70d639d700dba5327ab0c8, Penn Economics Department.
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