An Empirical Study of Political Bias in Legal Scholarship

Adam S. Chilton
Eric Posner

Abstract

Law professors routinely accuse each other of making politically biased arguments in their scholarship. They have also helped produce a large empirical literature on judicial behavior that has found that judicial opinions sometimes reflect the ideological biases of the judges who join them. Yet no one has used statistical methods to test the parallel hypothesis that legal scholarship reflects the political biases of law professors. This paper provides the results of such a test. We find that, at a statistically significant level, law professors at elite law schools who make donations to Democratic political candidates write liberal scholarship, and law professors who make donations to Republican political candidates write conservative scholarship. These findings raise questions about standards of objectivity in legal scholarship.