What Moves the Court? Interest Groups, Public Opinion, Court Composition and the Solicitor General

The impact of several major types of interest groups, the solicitor general, Court composition, and American public opinion on U.S. Supreme Court decision-making is tested with a poll-matched database from the Warren, Burger, and Rehnquist Courts. Results indicate that the solicitor general’s position, American public opinion, Court composition, and a few (but not most) interest groups all significantly and independently affect Supreme Court decision-making.