Electoral competition in 2-dimensional ideology space with unidimensional commitment |
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Authors: | Marcin Dziubi??ski Jaideep Roy |
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Institution: | 1. Institute of Informatics, Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Banacha 2, 02-097, Warsaw, Poland 2. Department of Economics, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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Abstract: | We study a model of electoral competition between two candidates with two orthogonal issues, where candidates are office motivated
and committed to a particular position in one of the dimensions, while having the freedom to select (credibly) any position
on the other dimension. We analyse two settings: one where both candidates are committed to the same dimension, and the other
where each candidate is committed to a different dimension. We focus on characterisation and existence of pure strategy Nash
equilibria when the core is empty. We show that if the distribution of voters’ ideal policies is continuously differentiable
and has a bounded support, then an equilibrium exists if the candidates are differentiated enough. Our results for the case
where the candidates have a common committed issue have implications for the literature on valence. |
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Keywords: | |
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