A New York Times and Siena College poll released Nov. 5 showed Donald Trump leading Joe Biden in five of the six key swing states, with a notable jump in support among nonwhite and young voters. In response, Democrats freaked out.

But then two days later, voters across the country actually went to the polls, and Democrats and Democratic-associated policy did pretty well. In Kentucky, Andy Beshear held the governorship. Democrats took back the House of Delegates in Virginia. And Ohio voted for an amendment protecting abortion rights.

I asked Mike Podhorzer, a longtime poll skeptic, to help me understand the apparent gap between the polls and the ballot box. Podhorzer was the longtime political director of the A.F.L.-C.I.O. And as the founder of the Analyst Institute, he was the godfather of the data-driven turn in Democratic campaign strategy. He also writes a newsletter on these topics called “Weekend Reading.”

We discuss the underlying assumptions behind polling methodologies and what that says about their results; how to square Biden’s unpopularity with the Democrats’ recent wins; why he thinks an anti-MAGA majority is Biden’s best bet to the White House and how that coalition doesn’t always map cleanly onto demographic data; what a newly energized labor movement might means for Biden; and much more.

Mentioned:

“We Gave Four Good Pollsters the Same Raw Data. They Had Four Different Results.” by Nate Cohn

Book Recommendations:

“Politics and the English Language” by George Orwell

Tyranny, Inc. by Sohrab Ahmari

Crashed by Adam Tooze

Thoughts? Guest suggestions? Email us at [email protected].

You can find transcripts (posted midday) and more episodes of “The Ezra Klein Show” at nytimes.com/ezra-klein-podcast, and you can find Ezra on Twitter @ezraklein. Book recommendations from all our guests are listed at https://www.nytimes.com/article/ezra-klein-show-book-recs.

This episode of “The Ezra Klein Show” was produced by Rollin Hu. Fact checking by Michelle Harris and Kate Sinclair. Mixing by Jeff Geld and Efim Shapiro. Our senior editor is Claire Gordon. The show’s production team also includes Emefa Agawu and Kristin Lin. Original music by Isaac Jones. Audience strategy by Kristina Samulewski and Shannon Busta. The executive producer of New York Times Opinion Audio is Annie-Rose Strasser. And special thanks to Carole Sabouraud.