Information from PVS including the Senator's biography, issue positions, interest group ratings, committee assignments, campaign finances, and voting record.

Official site, including biography, press releases, constituent services, resources for students and teachers, photos, biography, contact details, committee assignments, farm and other top issues, plus resources for Iowans as well as for journalists.

The Iowa Senator's voting record and positions on a wide range of matters.

Cosponsorship of major legislation, contact details, biography, key votes, staff members, open letters to this U.S. Senator, and campaign contribution data.