IRRELEVANT
STATES HAVE DIFFERENT LAWS FOR DETERMINING A PERSONS' RESIDENCY. IN NEW YORK, IT'S 184 DAYS. CANDIDATES MUST MEET THE CRITERIA BEFORE ELECTORS CAN CHOOSE A CANDIDATE IN THEIR STATE. TWO CANDIDATES FROM THE SAME STATE RUNNING ON THE SAME PARTY TICKET, TRUMP AND RUBIO WOULD NOT BE ABLE TO BOTH RECEIVE ELECTORAL COLLEGE VOTES FROM FLORIDA ELECTORS, ACCORDING TO THE 12TH AMENDMENT.
Another avenue for avoiding a 12th Amendment problem would be for Trump to change his residency—again. He was a New York state resident until September 2019, when he
changed his residence to Mar-A-Lago in Florida. If he were to return to New York, he would need to spend at least
184 days in the state before he could officially be classified as a New York resident.
The Residency Challenge of a Trump-Rubio Ticket, Explained - Cole Murphy - The Dispatch