I don't think that Trump knows any more than most people do. If anything, probably less because of how he closes his eyes and covers his ears as much as possible when it comes to bad news. It's more about if he will pursue the "I was robbed" narrative if he loses, which would probably not be good for anyone.

This. He had a TV show im the works after the 2016 election,  expecting to lose.

Handed in my ballot at the county election office weeks ago, but imma dabba doo.

https://www.youtube.com/watch?v=iwRA-dtub7Y

For those who prefer a live video over the live ticker from the Guardian

I did my part!

Also, some interesting last minute stats:

Just 4% of polled voters made their decision within the last week. For comparison's sake: in 2016, that 'last week' number was at 12-13% according to CNN. If that's true then there's not too many people that were still undecided or flip-flopping close to the finish line THIS time.

Exit polls are supposed to be pretty iffy this year, so not sure how much stock to put into any of those numbers.

Yeah, Nate Silver implied CNN's sample is unweighted and they are including 4,400 early and 7,700 e-day votes.

Also, there's almost literally no one left to vote in Florida it looks like. Just a few people in Miami and the panhandle. R registration advantage so far, overall? 200K. De Santis needed 450K to win in 2018 by a hair's width.

I know it's still early, but Trump is in a commanding lead...and that's quite upsetting.

How so? 

More registered voters have voted in Florida, but that's not necessarily Trump voters. Polls show that in most state Biden does better among Democrats than Trump among Republicans, by something like 91% as opposed to 89.

But, more importantly, it was expected in Florida that more registered republicans would vote than democrats. But, about 20% of the voters in Florida are independent, and polls have been showing Biden doing significantly better than Trump there. If that is true, then Biden would win based on current numbers.

Half of the vote reported for Greene county, Indiana! Trump up 39 at the moment. He won there by 53 in 2016.

Edit - Dekalb county also in, 67% of the vote, Trump up 38, won there by 48 in 2016.