Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks to board his flight at Martha's Vineyard airport for fundraising events on Saturday, Aug. 18, 2012 in West

 

              Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks to board his flight at Martha
Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks to board his flight at Martha's Vineyard airport for fundraising events on Saturday, Aug. 18, 2012 in West Tisbury, Mass. (AP Photo/Evan Vucci)