I'm only poll nerd with not much data crunching experience.
But I took a look at Sumter Co. FL early voting totals. Wasserman says that Trump needs to get 66-67 in Sumter to be on track to win the state. Because it is so deep red, it would foreshadow shifts around the state in the more rural deep red areas. He won it by 69% in 2016.
I know it's the early vote, BUT they are almost maxed out on the total number of registered voters already, so it's close to what the end number will be.
Right now, if I take the latest crosstab data from Nate Silver on FL, which seem pretty conservative, it shows Reps with a party ID 89-9 and Dems are at 91-7, giving Dems a +2 crossover vote. They also have Ind. at 5-6 points to Biden.
So i plugged those numbers into the current vote totals and Trump is at 63.5 and Biden at 36.5. That is a really significant shift and puts Trump far short of what he needs in the reddest parts of the state.
A good sign I hope....