Romney won whites by 20 nationwide and lost to Obama.
While the overall early vote is more democratic leaning than the EV vote, a significant amount of 65+ white retirees who heavily skew Republican have already submitted their ballots, which makes the 7 point drop off pretty concerning for Trump. Florida is a state where Trump probably needs to win whites overall by about 25 to win the state and to make up for only a 17% lead in the EV vote, he easily needs a 30+% lead on EV with white voters which is pretty difficult with so many white women swinging towards Clinton.
