I just saw something on cnn I think explaining why PA was being slow, there is still uncertainty, not much but how much is unknown.
There are 200k ballots outstanding.
Half are mail ins, will favour Biden. However they don't know how many will have to be discarded (I think due to eg inner envelopes?)
The other half are provisionals, and these might well favour Trump. They have no real feel for how much they could favour him.
That's the reason why they're being so hesitant to conclude anything - it is very unlikely the discard + provisional skew could lead to a trump surge big enough, but its unknown.
It would be nice if the certainty could come from elsewhere, but that won't be GA, or NV, so we've got AZ and NC left. I haven't been following them recently but haven't seen announcements imminent.
So yes, another sleepless night.