SAN DIEGO — Republican presidential candidate Sen. John McCain of Arizona (R) laughs as Calif. Gov. Arnold Schwarzenegger (2nd-L) speaks with Sen. Joe Lieberman, I-Conn. (L), and Cindy McCain (C) during a campaign appearance at Jim's Air Aviation, Feb. 5, 2008. McCain is leading in most polls over rival contender Mitt Romney on the biggest 'Super Tuesday' in American history. (Photo by Mario Tama/Getty Images)
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