Thanks, Sarah, for the warm welcome. It is a pleasure to guest blog this month.
With pundits already speculating about President Obama’s next Supreme Court nominee, it seems a good time to discuss relationships between political forces surrounding Supreme Court appointments and Justices’ decisions. Justices sometimes disappoint their appointing presidents, and ideologically-distant Senates are often blamed for presidents’ “mistakes.” For example, David Souter and John Paul Stevens turned out to be far more liberal than the Republican presidents who appointed them (Bush I and Ford, respectively). These presidents both faced very liberal Senates when they selected Souter and Stevens.
Are nominees like Souter and Stevens anomalies or part of a larger pattern of senatorial constraint? My recent article in the Hastings Law Journal offers the first empirical analysis of the Senate’s role in constraining presidents’ choices of Supreme Court nominees over an extended period. It considers ideologies of Senates faced by nominating presidents and measures whether the ideologies of these Senates predict Justices’ voting behavior. The analysis substantially qualifies earlier understandings of senatorial constraint.
Earlier empirical studies consider only limited numbers of recent nominees (see article pp. 1235-39). They suggest that the Senate has constrained presidents’ choices, and many scholars theorize that the Senate has enhanced its role in the appointments process since the 1950s. Analysis of a larger group of nominees shows the Senate’s ideology has had significant predictive power over Justices’ votes in only two isolated historical periods. Senatorial ideology was last significant in the 1970s, shortly after the filibuster of Abe Fortas’s nomination to be Chief Justice, but then it actually lost significance after the Senate rejected Bork in 1987.