Former Massachusetts Gov. Mitt Romney will campaign Monday in Tampa with U.S. Senate candidate Marco Rubio, the Rubio campaign announced today. The campaign event will be at 11:30 a.m. at the Blaise F. Alfano Conference and Banquet Center, 11606 McKinley Drive. It is free and open to the public. Romney, a Republican presidential candidate in 2008 and potential candidate in 2012, is expected to endorse Rubio over Gov. Charlie Crist in the Republican Senate primary.