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Working Paper
The Changing Polarization of Party Ideologies: The Role of Sorting
U.S. congressional roll-call voting records show that as polarization of the two parties along the economic dimension changes, polarization along the social/cultural dimension tends to change in the opposite direction. A model of party competition within a two-dimensional ideology space is developed in which party platforms are determined by voters who compose the party. It is shown that if distribution of voter preferences is radially symmetric, polarization of party ideologies along the two dimensions are inversely related, as observed. The model gives a remarkably good quantitative account ...
Working Paper
The Changing Polarization of Party Ideologies: The Role of Sorting
Ideology scores derived from U.S. congressional roll-call voting patterns show that the ideological distance between the two parties along the primary dimension changes inversely with the ideological distance along the secondary dimension. To explain this inverse association, a model of party competition with endogenous party membership and a two-dimensional ideology space is developed. If the distribution of voter preferences is uniform on a disk, equilibrium ideological distances along the two dimensions are inversely related. The model can quantitatively account for the historical ...
Working Paper
The Changing Polarization of Party Ideologies: The Role of Sorting
Ideology scores derived from U.S. congressional roll-call voting patterns show that the ideological distance between the two parties along the primary dimension changes inversely with the ideological distance along the secondary dimension. To explain this inverse association, a model of party competition with endogenous party membership and a two-dimensional ideology space is developed. If the distribution of voter preferences is uniform on a disk, equilibrium ideological distances along the two dimensions are inversely related. The model can quantitatively account for the historical ...