Well, let's take a look...
https://www.realclearpolitics.com/ep...den-6247.html#!
In the average of polls, Trump's still way down from where he was a month ago. Which wasn't good then. In the last two weeks, Trump has lost his lead in Georgia and Iowa, while not gaining the lead in any swing state. Biden now leads in both states.
https://www.realclearpolitics.com/ep...iden-6974.html
https://www.realclearpolitics.com/ep...iden-6787.html
More worrisome for Trump, the last poll by Rasmussen taken 10/18 and 10/19, has Biden pulling ahead in Ohio, which should be a reliably red state. Rasmussen normally polls higher for republicans than most other polls, so that's particularly a bad sign for Trump.
Zerohedge predicted the republicans would hold on to the House in 2018, too...
How did that turn out?
Normally, you'd expect the race to tighten a bit this late, but so far, it hasn't.