Joe Biden is extraordinarily strong.

But Cooper noted that it is Democrats who have called Bidens performance a disaster and a train wreck.

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Listen, people can debate on style points, Harris said.

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Kamala HarrisPhoto by Kevin Dietsch/Getty Images

I am talking about three and a half years of performance in work that has been historic.

Cooper then pointed out that it was the Biden campaign that called for the debate.

Can you say that you are not concerned at all having watched the presidents performance tonight?

Donald Trump and Joe Biden

Harris responded, It was a slow start.

Thats obvious to everyone.

Im not going to debate that point.

Im talking about the choice in November.

Im talking about one of the most important elections in our lifetime.

And Gavin Newsom did a remarkable job as a surrogate.