President Donald Trump, a lifelong New Yorker, has changed his primary residence to Florida, a move that could benefit his re-election campaign — and his tax bill.

The president says in a declaration of domicile filed in Palm Beach County, Florida, that he has become a "bona fide resident of the State of Florida residing at" his Mar-a-Lago resort in Palm Beach.

Trump adds in the document, dated Sept. 27, that "I formerly resided at 721 Fifth Avenue" in New York. That's the address of Trump Tower.