Bruce Cain is the Heller Professor of Political Science and Public Policy at the University of California at Berkeley. He is also the director of the University of California Washington Center, based in Washington, DC. Among others, he is the author of The Reapportionment Puzzle (1984); the co-author of The Personal Vote (1987), with John Forejohn and Morris Fiorina; and of Congressional Redistricting (1991), with David Butler.

Cain was a Rhodes Scholar at Trinity College, Oxford, and received his Ph.D. in political science from Harvard University.