Republican presidential candidate, former Massachusetts Gov. Mitt Romney and his vice presidential running mate, Rep. Paul Ryan, R-Wis., greet campaign workers at a call center in Richmond Heights, Ohio, on Election Day, Tuesday, Nov. 6, 2012. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

Republican presidential candidate, former Massachusetts Gov. Mitt Romney and his vice presidential running mate, Rep. Paul Ryan, R-Wis., greet campaign workers at a call center in Richmond Heights, Ohio, on Election Day, Tuesday, Nov. 6, 2012. (AP Photo/Charles Dharapak)