About turnout - do not forget that the number of people living in US has increased by 10 million since 2012
Florida looking good for Trump. In 2012 Democrats beat Republicans by 3 points in early voting while this year R are actually edging D so far. Romney reduced the margin by 2 points on election day.
Similar with North Carolina. Democrats won EV 2:1 in 2012 while this year their advantage is 3-4 points less. A bigger turnout may sound good and "reduce" the deficit but they are reports that black turnout has dropped a few points.
Arizona is also looking favourably for Trump. I read he is 5 points ahead in EV now (it was 3.5 earlier). Yes, it is behind their 2012 total but that gives him a 5 point with probably 70+% already cast. Obama barely gained anything on election day.
I don't know about Nevada but it looks good for Clinton as she is doing similar to 2012 (Obama won the state by almost 7 points). I don't know about the drop-off this week but so far it is trending her way.