From what I've seen, the biggest source of anxiety is this belief that "Polls ALWAYS underestimate Trump, so Harris is losing if she's not up by x points in the polls". Maybe it'll happen a third time. But it certainly not baked in.

Lichtman predicted Harris and his model is purely fundamentals/enthusiasm Not saying he can't be wrong, but the only time he was (2000) was a very weird election

Absentee/early voting returns in the rust belt currently look favorable for Harris. It's still early but dems have a large lead in PA

Yeah, it seems like if anything it's going to be the reverse, judging from how he underperformed in the primaries and how bad attendance at his rallies has gotten.