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Debate expert: Watch for Trump’s policy knowledge, How Clinton connects with millennials

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Todd Graham, a presidential debate expert and the Director of Debate at Southern Illinois University, joined WGN Morning News to preview tonight's presidential debate between Donald Trump and Hillary Clinton.

Graham discussed how imperative it is for Trump to prove he is knowledgeable and able to debate Clinton without attacking her.

"Part of looking presidential is knowing what you're talking about," Graham said. "So that's were a lot of people are tuning in, to see if Trump has increased his policy knowledge."

He also addressed how Clinton should use this debate to connect to millennials, a demographic she has struggled to win over.

"She's got to talk to them about the policies they want to hear", he said. "The millennials want to hear things about free trade and education."