Empirical research indicates that factors such as an individual Justice\u27s general political ideology play a substantial role in the decision of Supreme Court cases. Although this pattern holds in federalism cases, views about the proper allocation of authority between the state and federal governments - independent of whether the particular outcome in any given case is liberal or conservative - can sometimes be decisive, as demonstrated by the 2005 decision in Gonzales v. Raich, in which conservative Justices voted to invalidate a strict federal drug provision in light of California\u27s legalization of medical marijuana, and liberal Justices voted to uphold the federal law. Proponents of a strongly legal realist view of the Cour...