The invisible primary has ramped up with Jeb Bush's declaration that he is "exploring" a presidential run.
On this politics day edition of River to River, host Ben Kieffer speaks with Hans Hassell, assistant professor of politics at Cornell College, and with Donna Hoffman, Department Head and Associate Professor of Political Science at the University of Northern Iowa, about the possibilities in the 2016 presidential primaries and about the legacies that Tom Latham, Bruce Braley, and Tom Harkin leave behind them as they retire from Congress.
