How Polarization Begets Polarization Ideological Extremism in the US Congress

Samuel Merrill III has served as a professor of mathematics at the University of Rochester and Wilkes University. He received a PhD in Mathematics from Yale University and an MS in Statistics from Pennsylvania State University.

Bernard Grofman is Distinguished Research Professor of Political Science at the University of California, Irvine and the inaugural Jack W. Peltason Chair of Democracy Studies at the University of California, Irvine.

Thomas L. Brunell is Professor of Political Science University of Texas at Dallas