Dynamics of the Presidential Veto: A Computational

John Duggan, Tasos Kalandrakis () and Vikram Manjunath ()
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Vikram Manjunath: Department of Economics, University of Rochester

No WP56, Wallis Working Papers from University of Rochester - Wallis Institute of Political Economy

Abstract: We specify and compute equilibria of a dynamic policy-making game between a president and a legislature under insitutional rules that emulate those of the US Constitution. Policies are assumed to lie in a two-dimensional space in which one issue dimension captures systemic differences in partisan preferences, while the other summarizes non-partisan attributes of policy. In any period, the policy choices of politicians are influenced by the position of the status quo policy in this space, with the current policy outcome determining the location of the status quo in the next period. Partisan control of the legislature and presidency changes probabilistically over time. We find that politicians strategically compromise their ideal policy in equilibrium, and that the degree of compromise increases when the opposition party is more likely to take control of the legislature in the next period, while politicians become relatively more extreme when the opposition party is more likely to control the presidency. We measure gridlock by (the inverse of ) the expected distance of enacted policies from the status quo in the long run, and we show that both gridlock and the long run welfare of a representative voter are maximized when government is divided without a super majority in the legislature. Under unified government, we find that the endogeneity of the status quo leads to a non-monotonic effect of the size of the legislative ma jority on gridlock; surprisingly, under unified government, gridlock is higher when the party in control of the legislature has a superma jority than when it has a bare ma jority. Furthermore, a relatively larger component of policy change occurs in the non-partisan policy dimension when a superma jority controls the legislature. We conduct constitutional experiments, and we find that voter welfare is minimized when the veto override provision is abolished and maximized when the presidential veto is abolished.

New Economics Papers: this item is included in nep-cdm, nep-mac and nep-pol
Date: 2008-04

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