Technically, it is a vote for a Constitutional Amendment that would take away the casino legalizing powers from the State Legislature and pass those powers down to the citizens of the state. Effectively, it is just a vote to be able to have a vote. There is a measure to be voted on in November of 2018 that will give the citizens of Florida, if passed, the ability to initiate a referendum that would put casino expansion on the ballot in a future year. Some of these racinos also offer player-banked table games but are on somewhat shaky ground in doing so, and all of them can offer poker. They do have racinos, which are kind of like smallish casinos that are physically tied to a racetrack and offer machines.
Without those, it is difficult to tell whether any full-on brick-and-mortar casinos would exist in the state as they certainly do not have any at this time.
Most forms of gambling that anyone can possibly want are available in Florida, but that is mainly due to the existence of the Tribal Casinos. Florida is something of an in-between state when it comes to how Conservative they are regarding gambling.