I've been looking for articles that challenge my own assumptions about the US election results, and better explain why Biden didn't do even better.

Here's one that I think hits a trifecta: Coronavirus, economy and racism.
Thread https://www.wsj.com/articles/how-democrats-lost-so-many-south-texas-latinosthe-economy-11604871650

I assumed that b/c of his mishandling of the pandemic, voters would punish Trump. Especially those worried about their jobs.

That's... not what happened.

Many thought: 'Trump couldn't see it coming and there's not much he could do. Shutting down the economy will hurt jobs more'

I ALSO assumed that Trump's racism towards Mexicans and immigration restrictions would keep Mexican-Americans with Democrats.

That's... also not what happened.

Biden took them for granted. They were persuaded to vote for Trump through other ways (economy, religion).

We can understand why Latinos in Florida voted Republican.

It's a much bigger issue that Mexican-Americans across Texas, CA, Nevada and AZ moved towards Trump.

That should raise big questions.