Iowa is once again at the center of the race for the White House – President Obama is on a three day bus tour of the state and newly minted Republican V-P pick Representative Paul Ryan was at the Iowa State Fair. This River to River, we’ll talk about Mitt Romney’s selection of Paul Ryan and what the effect might be in swing states such as Iowa. Our guests are political analysts Steffen Schmidt of Iowa State University and Tim Dale of the University of Wisconsin – La Crosse.