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BILOXI, MS - JANUARY 02:  Republican presidential frontrunner Donald Trump speaks at the Mississippi Coast Coliseum on January 2, 2016 in Biloxi, Mississippi. Trump, who has strong support from Southern voters, spoke to thousands in the small Mississippi city on the Gulf of Mexico. Trump continues to split the GOP establishment with his populist and controversial views on immigration, muslims and some of his recent comments on women.  (Photo by Spencer Platt/Getty Images)
BILOXI, MS - JANUARY 02:  Republican presidential frontrunner Donald Trump speaks at the Mississippi Coast Coliseum on January 2, 2016 in Biloxi, Mississippi. Trump, who has strong support from Southern voters, spoke to thousands in the small Mississippi city on the Gulf of Mexico. Trump continues to split the GOP establishment with his populist and controversial views on immigration, muslims and some of his recent comments on women.  (Photo by Spencer Platt/Getty Images)

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GOP presidential candidate Donald Trump continues to hold a commanding lead in the Republican primary race, according to a national CBS News poll.

Poll: Trump on top, Cruz and Rubio trail

GOP presidential candidate Donald Trump continues to hold a commanding lead in the Republican primary race, according to a national CBS News poll.