Donald Trump Changes Reaction to 1st Debate

ABC News' Jon Karl weighs in on Trump's reversal to now calling the first presidential debate "rigged."
2:08 | 09/30/16

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Transcript for Donald Trump Changes Reaction to 1st Debate
Let's go to Jon Karl. We start with the Twitter blast from Mr. Trump. Kind of inexplicable that he's doubling down. I'm concerned about the time here, George. You mentioned 3:20 A.M. The others were 5: 14, 5:30. I don't know if he's getting any sleep. Hillary Clinton said a man you can bait with a tweet is not man you can trust with nuclear weapons. It's quick inexplicable. He's changening his tune on how the debate went, saying it's rigged. A series of polls starting to come in showing a bounce for Hillary Clinton. Yes, and it's extraordinary. If you look in the minutes after the debate, he said to CNN he thought lester holt did great job. Now we're seeing virtly every poll come in showing a bounce for Hillary Clinton. She leads in states like Florida, New Hampshire, Michigan. And clearly this is getting under his skin. Clearly, the -- it's a reflection that they do not think that debate went well at all. Maybe later we'll see tweets about "Usa today." Kind of remarkable. In 34 years, they have never not endorsed a candidate like that. This was a scathing editorial. Part of a pattern developing. It sure is. You had that. Days before you had "The Arizona republic" which has not endorsed a democratic presidential candidate in 128 years endorsing Hillary Clinton. Look at this from "The wall Street journal" editorial board. Dor Thi Rabinowitz says her election alone is what stands between the American nation and the reign of the most unstable -- that's "The wall Street journal." Next debate nine days away. It will air live right here on ABC. Our own Martha Raddatz is one of the moderators. The vice presidential candidates debate this Tuesday. Another long night. Now to violent protests in California jefr night over the

This transcript has been automatically generated and may not be 100% accurate.

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