Joe Biden leads Donald Trump in Pennsylvania and Florida, according to new Times/Siena polls taken after the first debate.
Biden leads in Pennsylvania, 49 to 42 percent among likely voters. He leads in Florida, 47 to

In an analysis of interviews conducted yesterday, including in Arizona (where a poll is ongoing), there was modest evidence of a shift in Joe Biden's direction after Trump's COVID diagnosis. That said, one day of interviews is not nearly enough to reach any firm conclusions
The shift, though, would be material if confirmed and it was statistically significant, controlling for the demographic and political variables used in weighting. That said, it's still just one day of interviews. We'll have to wait and see here.
Of the two results, the biggest surprise was probably Florida, where we found Biden+5 with a R+4 sample. This is a fully updated voter file that reflects some meaningful GOP registration gains in the states.
It's just a subsample, so big MoEs here, but we found no evidence of the big Trump gains among Hispanic voters in Florida or in Miami-Dade County. Biden even narrowly led a (very small) sample of Cuban voters; they were R 47-28 by registration. Again, small samples but...
The Pennsylvania poll was pretty in line with the poll averages and our pre-debate poll, which found Biden+9. I should note that this sample was much more GOP (R+1, in fact) than our prior sample by party identification, so we might just have a better-for-Trump sample this time
Nonetheless, if you take the two PA polls together we've got Biden+8 with N>1400 in perhaps the most important state with just over a month until the election. This is a fairly daunting deficit in a stable race.
The debate certainly did nothing to help the president. His ratings dropped across the board. An overwhelming majority of voters disapproved of his performance, including one-third of his own supporters.
That said, Biden didn't exactly kill it either. Most voters didn't want to declare anyone a winner and Biden's ratings didn't improve compared to our pre-debate PA poll, and even fell by a lot on whether he was a strong leader.
Nonetheless, it's Trump who trails and needed a win. Instead, he lost, even if his opponent didn't excel on his own terms. Not much time left.
And since a few of you have asked: the majority of our interviews last night were in AZ. So the shift in the Friday numbers had very limited influence on the toplines here.

More from Nate Cohn

One question I keep getting about the Georgia early voting is about age: isn't the electorate older, and how much does it hurt the Democrats?
So far the answer is 'not really' and 'not at all.'

The first question is easy enough. As of today, youth turnout is basically keeping pace with the general, controlling for the slightly reduced opportunities to vote. This augurs for an unusually young


The second question is more interesting: are the Democrats hurt by lower youth turnout? So far the answer is no, and there are two reasons.
One reason: there's not a *huge* gen. gap. Maybe young voters are D+20 while >65 are R+15. You need a big gap for modest changes to matter.

The second reason is maybe more interesting: the young voters who have voted are just a lot more Democratic than the young voters who turned out at this stage of the general election

By party primary vote history, the 18-29 year olds who have voted so far are D 38, R 12. They were D 33, R 14 in the general at this stage.

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THREAD: 12 Things Everyone Should Know About IQ

1. IQ is one of the most heritable psychological traits – that is, individual differences in IQ are strongly associated with individual differences in genes (at least in fairly typical modern environments). https://t.co/3XxzW9bxLE


2. The heritability of IQ *increases* from childhood to adulthood. Meanwhile, the effect of the shared environment largely fades away. In other words, when it comes to IQ, nature becomes more important as we get older, nurture less.
https://t.co/UqtS1lpw3n


3. IQ scores have been increasing for the last century or so, a phenomenon known as the Flynn effect. https://t.co/sCZvCst3hw (N ≈ 4 million)

(Note that the Flynn effect shows that IQ isn't 100% genetic; it doesn't show that it's 100% environmental.)


4. IQ predicts many important real world outcomes.

For example, though far from perfect, IQ is the single-best predictor of job performance we have – much better than Emotional Intelligence, the Big Five, Grit, etc. https://t.co/rKUgKDAAVx https://t.co/DWbVI8QSU3


5. Higher IQ is associated with a lower risk of death from most causes, including cardiovascular disease, respiratory disease, most forms of cancer, homicide, suicide, and accident. https://t.co/PJjGNyeQRA (N = 728,160)