Many people live in RV’s and declare themselves residents of Florida and travel around the U.S.
I don’t believe you are required to have a physical address in order to register to vote.
Now, if they were all using the same UPS store box ... that’s a different story.
Doubt these are the RV’ers. Not many or any in Broward.
We did this while full time RV’ing I believe we are allowed one place to be our tax address. This is supposed to be the state where you spend the most time every year.
We always tried to pick a tax friendly state while living on the road.