Republican presidential candidates, Sen. Marco Rubio, R-Fla., left, Donald Trump, Sen. Ted Cruz, R-Texas,  and Ohio Gov. John Kasich, right,  stand together before the start of the Republican presidential debate sponsored by CNN, Salem Media Group and the Washington Times at the University of Miami,  Thursday, March 10, 2016, in Coral Gables, Fla. (AP Photo/Wilfredo Lee)
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