I keep coming back to the fact that he's spent more time in NC (the one state of the seven that he won four years ago) the past three days than he has any other state. I'm trying really hard to guard against motivated reasoning in how to look at this stuff, especially after how the last two elections, but when you tune out all the noise, having to spend that much time playing defense at this stage is generally not a great signal.
The order of the blue wall will be interesting.... at least in the Trump era thus far, Wisconsin is always the rightmost state, but increasingly the CW is that PA will end up being closer. Goes against what I believe would happen, but how much of that is real or a product of Trump having to prioritize it due to how many EC votes it has remains to be seen.