Polling can change based on the performance of the last presidential debate: Steve Kornacki
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Polling can change based on the performance of the last presidential debate: Steve Kornacki

After the first presidential debate, Joe Biden led against President Trump by almost 10 percent in national polls. Steve Kornacki, NBC news national political correspondent, joins Smith to talk about whether debates matter in changing the polls.
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Thu, Oct 22 20207:14 PM EDT