Party formation in collective decision-making
We study party formation in a general model of collective decisionmaking, modeling parties as agglomerations of policy positions championed by decision-makers. We show that if there are economies of party size and the policy chosen is not beaten by another policy in pairwise voting, then 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 a wide range of models, including decision-making in committees with costly participation and representative democracy in which the legislature is elected by citizens.
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- Jeffrey S. Rosenthal & Martin J. Osborne & Matthew A. Turner, 2000.
"Meetings with Costly Participation,"
American Economic Review,
American Economic Association, vol. 90(4), pages 927-943, September.
- Morelli, Massimo, 1998.
"Party Formation and Policy Outcomes Under Different Electoral Systems,"
Staff General Research Papers
1242, Iowa State University, Department of Economics.
- Massimo Morelli, 2004. "Party Formation and Policy Outcomes under Different Electoral Systems," Review of Economic Studies, Wiley Blackwell, vol. 71, pages 829-853, 07.
- Massimo Morelli, 2004. "Party Formation and Policy Outcomes under Different Electoral Systems," Review of Economic Studies, Oxford University Press, vol. 71(3), pages 829-853.
- Massimo Morelli, 2001. "Party Formation and Policy Outcomes under Different Electoral Systems," Economics Working Papers 0018, Institute for Advanced Study, School of Social Science.
- Ignacio Ortuno-Ortin & Anke Gerber, 1998. "Political compromise and endogenous formation of coalitions," Social Choice and Welfare, Springer, vol. 15(3), pages 445-454.
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