Unconstitutional gerrymandering is the #1 reason
Diluted votes due to the above plus voter suppression moving towards Jim Crow era tactics = abysmal turnout
The bold plays very well with the Cuban diaspora in South Florida. And there is something the Dems could do there but it's incredibly unlikely at the moment.
Run better candidates - not recycled crap (see Charlie Crist)
Recruit, court, engage year-round - this is what the GOP does in Florida and it's what Dems do in other places but they haven't done it historically.
Mostly embrace aggressiveness with everything. I promise Dems can and do, do this in other places.
Here is the upside for Dems
Republicans may have won the house but they're not a happy lot. Nothing and I mean nothing is going to get done in this Congress. The GOP has attached itself to culture wars, not actual issues people in Florida are concerned with. Republicans have a sharply focused vision, an ugly one. This has become very evident and it's going to get old. That's why people are calling the state DeSantisstan. The removal of duly elected prosecutors from office is taking insane GOP strategy to authoritarian/fascist levels. Sane people won't want to live in it.
Florida’s Constitution gives the governor the power to suspend elected officials for various reasons, including neglect of duty and malfeasance or commission of a felony.
www.politico.com
Recruit and run better candidates with sane messages, meant to reach the majority, not the minority, would be the best start - especially progressives who are the only people actually winning elections in Florida. Here in Michigan the GOP ran the house and senate for 40 years. That's over. They can do that in Florida too.