Rufus King was an American Founding Father, lawyer, politician, and diplomat. He was a delegate from Massachusetts to the Continental Congress and the Philadelphia Convention and was one of the signers of the United States Constitution in 1787. After formation of the new Congress, he represented New York in the United States Senate. He emerged as a leading member of the Federalist Party and was the party's last presidential nominee during the 1816 presidential election.

The 1804 United States presidential election was the fifth quadrennial presidential election, held from Friday, November 2, to Wednesday, December 5, 1804. Incumbent Democratic-Republican president Thomas Jefferson defeated Federalist Charles Cotesworth Pinckney of South Carolina. It was the first presidential election conducted following the ratification of the Twelfth Amendment to the United States Constitution, which reformed procedures for electing presidents and vice presidents.