I'm on the fence.  The 2018 act took me from rules I understood and could make sense of (and could explain) to these fuzzy "adopt the service member's residency" rules.  I don't have any current military clients so I haven't had to research it further but it sure sounded like you could just make an "election" if you were the spouse.  I recall when reading the law a couple years ago that it created too much flexibility, even to the point of rewriting history.  It wouldn't be the first law that Congress passed that didn't make sense and had unintended consequences.  I'd have to go back and reread it but I think she might be able to elect FL residency even if she never lived there.  (Sorry, I'm not much help, mostly just rambling at this point!)

Where did she last vote?  If he's a FL resident, he should be voting (absentee) in FL.  If she elects to be a FL resident then wouldn't she be voting in FL?

Rick