The Costs of Policy Legitimation: A Test of the Political Capital Hypothesis

We test the political capital hypothesis that Supreme Court decisions simultaneously legitimate policy and harm support for the Court, at least under certain conditions. Our data suggest that the Court’s “legitimacy-conferring” capacity is weak. Learning that the Supreme Court upheld an affirmative action policy increased public support for the constitutionality and desirability of that policy, but only among Democrats pre-disposed towards that reaction. Furthermore, Democrats did not develop more favorable views of the Court. Consistent with the political capital hypothesis, Republicans developed more negative views of the Court when the Court associated itself with affirmative action policy.