IDEOLOGY, THE AFFORDABLE CARE ACT RULING, AND SUPREME COURT LEGITIMACY

The received wisdom in the scholarly literature on the US Supreme Court is that the perceived legitimacy of the institution is largely independent of the Court's policy output. Legitimacy is thought to be rooted in more stable factors, such as support for democratic values, and thus to be immune from ideological discontent with any particular decision. While recent research has demonstrated a general association between political predispositions and legitimacy, questions remain about the extent to which the specific decisions of the Court might shape legitimacy judgments in the mass public. In this paper, we examine the relationship between ideology, political sophistication, and evaluations of Supreme Court legitimacy in the aftermath of the recent decision on the Affordable Care Act. Our findings suggest a substantial role for Court policymaking in shaping perceptions of legitimacy in the mass public, but the nature of the relationship is conditional on political sophistication.