In the Presidential election of 1800 John Adams was the nominee for President and C. C. Pinckney for Vice-President. A “Congressional Convention” of Republicans, held in Philadelphia, nominated Thomas Jefferson and Aaron Burr as candidates for these offices. On the election which followed the Republicans chose 73 electors and the Federalists 65. Each elector voted for two persons, and the Republicans so voted that they unwisely gave Jefferson and Burr each 73 votes. Neither being highest, it was not legally determined which should be President or Vice-President, and the election had to go to the House. The Federalists threw 65 votes to Adams and 64 to Pinckney. The Republicans could have done the same, but Burr’s intrigue and ambition prevented this, and the result was a protracted contest in the House, and one which put the country in great peril, but which plainly pointed out some of the imperfections of the electoral features of the Constitution. The Federalists proposed to confess the inability of the House to agree through the vote by States, but to this proposition the Republicans threatened armed resistance. The Federalists next attempted a combination with the friends of Aaron Burr, but this specimen of bargaining to deprive a nominee of the place to which it was the plain intention of his party to elect him, really contributed to Jefferson’s popularity, if not in that Congress, certainly before the people. He was elected on the 36th ballot. The bitterness of this strife, and the dangers which similar ones threatened, led to an abandonment of the system of each Elector voting for two, the highest to be President, the next highest Vice-President, and an amendment was offered to the Constitution, and fully ratified by September 25, 1804, requiring the electors to ballot separately for President and Vice-President. Jefferson was the first candidate nominated by a Congressional caucus. It convened in 1800 at Philadelphia, and nominated Jefferson for President and Burr for Vice-President. Adams and Pinckney were not nominated, but ran and were accepted as natural leaders of their party, just as Washington and Adams were before them. Downfall of the Federal Party.