To what extent is legal change influenced by judicial politics? This q
uestion, as initially posed bg legal realists, provided the stimulus f
or much of the early study of the judicial profess. Although judicial
scholars have since explored the impact of judicial policy views, the
litigation environment, and the political environment, no systematic a
nalysis of the impact of these factors on legal change has been undert
aken. I develop a measure of legal change and use it to test the impac
t of judicial politics by examining search and seizure cases decided b
y the Supreme Court between 1962 and 1989. Using a multinomial logit m
odel, I find that several aspects of the judicial process, particularl
y che Court's political composition, legal constraints, litigant resou
rces, attorney experience, amicus support,and presidential preferences
, affect the direction of legal change.