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 the election of 1796, Federalist John Adams won the presidency, but his bitter rival, Democratic-Republican Thomas Jefferson came second and became vice president. Thus, the president and vice president were from opposing parties; and Jefferson used the vice presidency to frustrate the president's policies. Then, four years later, in the election of 1800, Jefferson, and fellow Democratic-Republican Aaron Burr each received 73 electoral votes. In the contingent election that followed, Jefferson finally won on the 36th ballot, and Burr became vice president. Afterward, the system was overhauled through the Twelfth Amendment in time to be used in the 1804 election.