David Wayne Loebsack (born December 23, 1952) is an American politician serving as the U.S. Representative from Iowa's 2nd congressional district since 2007. He is a member of the Democratic Party. The district includes Davenport, Pella, Iowa City, Clinton, and Ottumwa. He is an Emeritus Professor of political science at Cornell College. He is currently the only Democrat in Iowa's congressional delegation.