Right - one of them will have to change Florida residency.
I’ve never taken the talk of Rubio, DeSantis, Donalds seriously because of this.
It has been suggested they would only have to change their residency prior to the meeting of the Electoral College to get around this problem but that’s cutting it awfully close to risk losing on a technicality. (of course, if the ticket wins by more than 30 electoral votes then it becomes academic, but potentially forfeiting 30 electoral votes off the bad is certainly not a recipe for success).
Oh, right - the Constitution, since they’re Republicans.