Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets people during a 

Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets people during a campaign stop at a Cousins Subs fast food restaurant, in Waukesha, Wis., Tuesday, April 3, 2012. (AP Photo/Steven Senne)
Associated Press
Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets people during a campaign stop at a Cousins Subs fast food restaurant, in Waukesha, Wis., Tuesday, April 3, 2012. (AP Photo/Steven Senne)
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