Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, left, and Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, speak during the Republican presidential primary candidate debate sponsored by CNN and Telemundo at the University of Houston in Houston, Texas, U.S., on Thursday, Feb. 25, 2016. Trump holds a substantial lead in the southern region where Republican voters have their say on March 1, displaying remarkable strength for a twice-divorced New Yorker in Bible Belt states home to some of the nation's most conservative voters. Photographer: Gary Coronado/Pool via Bloomberg