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Republican presidential candidate businessman Donald Trump speaks with reporters after arriving at the Iowa State Fair on August 15, 2015 in Des Moines, Iowa.
Republican presidential candidate businessman Donald Trump speaks with reporters after arriving at the Iowa State Fair on August 15, 2015 in Des Moines, Iowa.

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    Donald Trump's Iowa machine

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Donald Trump's Iowa machine

CNN's Randi Kaye takes a closer look at Donald Trump's presidential campaign efforts in Iowa.

Donald Trump's Iowa machine

CNN's Randi Kaye takes a closer look at Donald Trump's presidential campaign efforts in Iowa.