Vice President of the United States the Twenty-fifth Amendment established a procedure for filling such a vacancy: This procedure has been implemented twice since the amendment came into force. The first instance occurred in 1973 following the October 10 resignation of Spiro Agnew, when Gerald Ford was nominated by President Richard Nixon and confirmed by Congress. The second occurred 10 months later following Ford's August 9, 1974 accession to the presidency upon Nixon's resignation, when Nelson Rockefeller was nominated by President Ford and confirmed by Congress. Had it not been for this new constitutional mechanism, the vice presidency would have remained vacant after Agnew's resignation and
Vice President of the United States Senate must meet to elect a vice president using a contingent election procedure in which senators, casting votes individually, choose between the two candidates who received the most electoral votes for vice president. For a candidate to win, he or she must receive votes from an absolute majority of senators (currently 51 of 100). There has been only one vice presidential contingent election since the Twelfth Amendment was ratified. It occurred on February 8, 1837, after no candidate received a majority of the electoral votes cast for vice president in the 1836 election. By a 33–17 vote, Richard M. Johnson