U.S. Sen. Rand Paul, R-Ky., speaks at a campaign event for Republican businessman Rod Blum, who is running against Democratic state lawmaker Pat Murphy in the 1st Congressional District, Wednesday, Oct. 22, 2014, on the University of Northern Iowa campus in Cedar Falls, Iowa. (AP Photo/Waterloo Courier, Matthew Putney)
Rep. Pat Murphy, D-Dubuque, right, talks with Iowa House Minority Leader Mark Smith, D-Marshalltown, left, on the floor of the House, Wednesday, April 30, 2014, at the Statehouse in Des Moines, Iowa. (AP Photo/Charlie Neibergall)