Cocktail waitresses at the Mandalay Bay hotel and casino wait to greet US Democratic presidential candidate Senator Hillary Clinton (D-NY), on caucus day in Las Vegas January 19, 2008. REUTERS/Rick Wilking (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 
Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y. greets cocktail waitresses during a campaign stop at the Mandalay Bay Hotel on caucas day in Las Vegas Saturday, Jan. 19, 2008. (AP Photo/Elise Amendola)