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Gibson, Caldeira, and Spence (2003a, 2003b, 2005) expound the theory of positivity bias in their analysis of the legitimacy of the U.S. Supreme Court in the aftermath of Bush v. Gore. This theory asserts that preexisting institutional loyalty shapes perceptions of and judgments about court decisions and events. In this article, we use the theory of positivity bias to investigate the preferences of Americans regarding the confirmation of Judge Samuel Alito as an associate justice of the Supreme Court. More specifically, from the theory of positivity bias, we derive the hypothesis that preferences on the Alito confirmation are shaped by anterior commitments to the Supreme Court. Based on an analysis of a national panel survey, we find that those who have a high level of loyalty toward the Supreme Court rely much more heavily on what we term judiciousness—in contrast to ideology, policy, and partisanship—in forming their opinions on whether to confirm Alito. Thus, institutional loyalty provides a decisive frame through which Americans view the activity of their Supreme Court.