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How presidential contenders can break through in the debate
5m 3s
The first GOP presidential debate will play out in primetime as Donald Trump, the leading contender for the nomination, plans to be a no-show. How do you debate a frontrunner who doesn't show up? That's the question for the eight candidates taking the stage Wednesday in Milwaukee. Lisa Desjardins discussed more with Republican strategist Gail Gitcho, who's worked on many presidential campaigns.