<iframe src="http://www.npr.org/player/embed/1148060/148060" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
This summer, NPR Senior Correspondent Juan Williams is traveling down the Mississippi river, profiling political races in the states along his route. This week he reports on races in some of the river cities in Iowa.
NPR thanks our sponsors
Become an NPR sponsor