Débat du 24/04/2016with David BRADY, Professor of political science, Stanford University; and Senior Fellow, Hoover Institution. He is the author of "Red and Blue Nation? Characteristics and causes of America's Polarized Politics" (with Pietro Nivola), Brookings 2006The Republican Nomination: The Trump Phenomenon Doug RIVERS, Professor of political science and chief scientist at You Gov.Momentum and strategic Voting, comparing Democrats and Republicans John FEREJOHN, Professor at NYU Law School and visiting fellow at Stanford University Commentary on Rivers Introduction & Chair: Denis LACORNE, senior rechearch fellow, Sciences Po-CERI Academic coordinator : Denis Lacorne, Sciences Po-CERIPhoto credits : Wikimedia commons, Donkey Hotey