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Ad space fills up prior to GOP’s second round of debates

Candidates and PACs alike are fighting to get their voices heard on the airwaves prior to Wednesday night's debate.

U.S. Sen. Lindsey Graham speaks to the Southern Republican Leadership Conference in Oklahoma City, Friday, May 22, 2015, via video teleconference from Washington. (Photo by Alonzo Adams/AP)
U.S. Sen. Lindsey Graham speaks to the Southern Republican Leadership Conference in Oklahoma City, Friday, May 22, 2015, via video teleconference from Washington. AP

Brian Walsh