Harold D. Clarke is the Ashbel Smith Professor in the School of Economic, Political and Policy Sciences at the University of Texas at Dallas. Jane Jenson is a professor emerita in the Department of Political Science at the Université de Montréal.Lawrence LeDuc is a professor emeritus in the Department of Political Science at the University of Toronto. Jon H. Pammett is a distinguished research professor in the Department of Political Science at Carleton University.