The Democratic Party in FL like in the rest of the South - is a brown, minority party.
White men fled to the GOP. Abrams and Gillum are gonna he beaten soundly - not because they’re black but because they’re extreme leftists.
And that doesn’t play well in Dixie. It ain’t New York or California.
In today's extreme left, anti-white bias is strong, even among white leftists. I would say that it's even stronger among black leftists, who can support BLM with more authentic feeling, although I'm not particularly accusing Abrams and Gillum. It just goes with the territory.
As to your comment about whites fleeing the Dem Party... I don't understand why it isn't nationwide.