U.S. Senate candidate Rob Portman votes in his Terrace Park, Ohio, community building Tuesday Nov. 2, 2010. Portman, a Republican, is seeking the U.S. Senate seat now held by the retiring Sen. George Voinovich, Ohio Republican. (Associated Press)

Photo by: Michael E. Keating

U.S. Senate candidate Rob Portman votes in his Terrace Park, Ohio, community building Tuesday Nov. 2, 2010. Portman, a Republican, is seeking the U.S. Senate seat now held by the retiring Sen. George Voinovich, Ohio Republican. (Associated Press)