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Today on Special Report, Charles Krauthammer explained how Donald Trump is where Ronald Reagan was in the 1980 presidential election.

"The other side had discredited itself by its record in office," Krauthammer said. "The question with Reagan, as it is today with Trump: Is this a guy who meets the minimal threshold for competence -- fitness for the presidency?"

Krauthammer said that will be determined by Trump's tone more than anything he says in tonight's convention speech. He again made a comparison to how Reagan reacted to Jimmy Carter during the presidential debate on October 28, 1980.

He said the election was over when Reagan, who'd been perceived as a warmonger, "very genially" turned to Carter during an attack and said "Oh, there you go again."

Watch more analysis above.

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