Polls can't measure hypotheticals

From Biden's withdrawal to Trump's legal woes, the polls this year have been really bad at predicting how voters will react to big events

A few days after the June 27th debate, Biden-Harris deputy campaign manager Rob Flaherty released an infamous memo that implicitly dissed Kamala Harris (and anyone on the Democratic bench who might replace Biden). He was writing off a post-debate Data for Progress poll showing Biden losing to Trump—but every other Democrat doing the same or worse.

This passage is quite a read in light of recent events:

The bedwetting brigade is calling for Joe Biden to "drop out." That is the best possible way for Donald Trump to win and us to lose.

First of all: Joe Biden is going to be the Democratic nominee, period. End of story. Voters voted. He won overwhelmingly. And if he were to drop out, it would lead to weeks of chaos, internal foodfighting, and a bunch of candidates who limp into a brutal floor fight at the convention, all while Donald Trump has time to speak to American voters uncontested. All of that would be in service of a nominee who would go into a general election in the weakest poss…