Republican presidential candidate and former Massachusetts Gov. Mitt Romney works the crowd as he marches in the Fourth of July parade in Amherst, N.H., on July 4, 2011. (Associated Press)

Photo by: Jim Cole

Republican presidential candidate and former Massachusetts Gov. Mitt Romney works the crowd as he marches in the Fourth of July parade in Amherst, N.H., on July 4, 2011. (Associated Press)