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US billionaire Donald Trump (C) is pictured as he arrives at the Women's British Open Golf Championships in Turnberry, Scotland, on July 30, 2015
US billionaire Donald Trump (C) is pictured as he arrives at the Women's British Open Golf Championships in Turnberry, Scotland, on July 30, 2015

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    As GOP debate looms, Trump tops polls

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As GOP debate looms, Trump tops polls

Donald Trump still leads in the polls, and hopes to carry that momentum into the first GOP debate as he takes center stage. CNN's Sara Murray reports.

As GOP debate looms, Trump tops polls

Donald Trump still leads in the polls, and hopes to carry that momentum into the first GOP debate as he takes center stage. CNN's Sara Murray reports.