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Trump supporter Kraig Moss makes a call on his CB radio for others to join the Truckers for Trump convoy event for Republican Presidential Candidate Donald Trump in Des Moines, Iowa, January 28, 2016, ahead of the Iowa Caucus.
With five days to go before the first vote in the US presidential nominations process in Iowa, Republican frontrunner Donald Trump is dominating the airwaves. His approval rating has never been higher. / AFP / JIM WATSON (Photo credit should read JIM WATSON/AFP via Getty Images)