Probably Scott as Florida's fairly red at the local level.
Grayson is one of the few Democrats he'd beat, though.
Fairly red at a local level? Maybe in the Panhandle/North FL counties, but Democrats just took the mayorships of Tampa (Bob Buckhorn) and even Jacksonville (Alvin Brown), adding to Orlando (Buddy Dyer) and Fort Lauderdale (Jack Seiler). Statewide, Democrats lead 41-36% in registered voters and Obama won a majority of FL voters. Democrats are well-off locally, just not at a state level (FL Senate/House w/ Republican supermajorities, Scott/Putnam/Bondi/Atwater) or a federal level (19R-6D House delegation, Rubio).