Tonight he's worried the conservative panhandle of Florida isn't turning out for Trump. The guy has spent most of 2016 railing against Donald Trump. What the hell does he expect?
The fact of the matter is Donald Trump doesn't have a ground game, and the Republican Party hates the guy and isn't working for him in the absence of that. It could, but it isn't.
Meanwhile the vicious infighting among Republicans which has continued since Trump was a fait accompli has simply demoralized the rank and file, the base of the party.