Rep. David Jolly, R-Fla., thinks that black voters will back his re-election in a battleground race that would represent one of the most unexpected defeats for national Democrats.

Jolly won his seat in 2014, but redistricting left him representing a Democratic-leaning district that President Obama carried by double digits. Former Gov. Charlie Crist, who left the GOP after losing a Senate bid against Marco Rubio, gave the Democrats a top recruit to challenge Jolly. But the first term lawmaker thinks GOP nominee Donald Trump holds the keys to victory — and not for any reason Trump would like.