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DES MOINES, IOWA - FEBRUARY 1: Republican presidential candidate, Sen. Marco Rubio (R-FL) addresses supporters at a caucus night party at the Marriott hotel on February 1, 2016 in Des Moines, Iowa. Republican and Democratic candidates for President of the United States are awaiting the first primary voting in the 2016 Presidential Election.  (Photo by Pete Marovich/Getty Images)
DES MOINES, IOWA - FEBRUARY 1: Republican presidential candidate, Sen. Marco Rubio (R-FL) addresses supporters at a caucus night party at the Marriott hotel on February 1, 2016 in Des Moines, Iowa. Republican and Democratic candidates for President of the United States are awaiting the first primary voting in the 2016 Presidential Election.  (Photo by Pete Marovich/Getty Images)

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    Rubio responds to criticism from his GOP rivals

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Rubio responds to criticism from his GOP rivals

In an interview with CNN's Alisyn Camerota, presidential candidate Marco Rubio spoke about uniting the Republican party and dismissed criticism from his GOP rivals.

Rubio responds to criticism from his GOP rivals

In an interview with CNN's Alisyn Camerota, presidential candidate Marco Rubio spoke about uniting the Republican party and dismissed criticism from his GOP rivals.