The Congressional caucus that made Presidents for many years became an accepted institution in 1804, when the Republican or Jeffersonian members of Congress were publicly invited to meet on the 25th of February. They unanimously nominated Mr. Jefferson for re-election, and as Burr was unthought of for Vice-President, they nominated George Clinton, of New York, for that office. This was the first open political caucus or convention to nominate national candidates. The caucuses of 1800 were held in secret by both the Federalists and Republicans, and no record was preserved of their actions. Those who called the caucus, appreciating the prejudice that would likely be provoked by Congress attempting to dictate the candidates for President and Vice-President, distinctly declared that the caucus or conference was called solely as individuals, and not as official representatives of the Senate and House. If the Federalists held a caucus in 1804, there is no record of it that I have been able to find, but they united on Charles C. Pinckney, of South Carolina, for President, and Rufus King, of New York, for Vice-President. Both of the parties gave the second place on their respective tickets to New York, clearly indicating that they regarded New York as one of the pivotal States of the conflict. Ohio had been admitted into the Union in 1802, making 17 States to take part in the election of 1804, and the new apportionment, shaped by the census of 1800, enlarged the number of electoral votes. While the Federalists had greatly diminished in popular strength by the loss of power and the steadily gaining approval of Jefferson and his Republican policy, they did not abate in any degree the intensity of their hostility to Jefferson, and in a few States where contests were made, the campaigns were conducted on the old defamatory lines which marked the two great battles between Jefferson and Adams.