Political strategist Stanley Greenberg writing in The Atlantic:

‘The release on Friday of an ABC News/Ipsos poll indicating that 55 percent of Americans approved of Donald Trump’s handling of the coronavirus—12 points higher than the previous week—prompted another round of fatalistic chatter in certain quarters of the political establishment. Shocked by Trump’s victory in 2016, some left-leaning commentators and rank-and-file Democrats alike have been steeling themselves for his reelection in 2020, noting that most presidents win second terms; that, at least before the pandemic, the economy was humming along; and more recently that, during moments of national disaster, Americans tend to rally around the leader they have.

But these nuggets of conventional political wisdom obscure something fundamental—something that even Democrats have trouble seeing: The United States is in revolt against Donald Trump, and the likely Democratic nominee, former Vice President Joe Biden, already holds a daunting lead over Trump in the battleground states that will decide the 2020 election. By way of disclosure, I am a Democratic pollster; for professional and personal reasons alike, I want Democratic candidates to succeed. But no matter what, I also want candidates and party operatives to base decisions—such as where and how to campaign—on an accurate view of the political landscape. At the moment, Democrats are underestimating their own strength and misperceiving the sources of it….’