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Businessman Donald Trump speaks to guests gathered for the Republican Party of Iowa's Lincoln Dinner at the Iowa Events Center on May 16, 2015 in Des Moines, Iowa. The event sponsored by the Republican Party of Iowa gave several Republican presidential hopefuls an opportunity to strengthen their support among Iowa Republicans ahead of the 2016 Iowa caucus.
Businessman Donald Trump speaks to guests gathered for the Republican Party of Iowa's Lincoln Dinner at the Iowa Events Center on May 16, 2015 in Des Moines, Iowa. The event sponsored by the Republican Party of Iowa gave several Republican presidential hopefuls an opportunity to strengthen their support among Iowa Republicans ahead of the 2016 Iowa caucus.

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    Donald Trump leads in the polls despite backlash

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Donald Trump leads in the polls despite backlash

Donald Trump has surged to the lead in the race for the GOP nomination, despite his controversial comments about immigration. CNN's Sara Murray reports.

Donald Trump leads in the polls despite backlash

Donald Trump has surged to the lead in the race for the GOP nomination, despite his controversial comments about immigration. CNN's Sara Murray reports.