Are state polls underestimating Joe Biden?

National polls have recently swung toward the president, but state polls haven't. Which have been better historically?

It’s starting to be that time again when I receive an endless stream of emails and Twitter DMs from people who refresh our election models every minute and ask what happened whenever anything changes—anything at all.

It can be a bit overwhelming, but one positive of all the messages is that I get a lot of really good questions about the election.

One of…

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