1800 United States presidential election From Wikipedia

The 1800 United States presidential election was the fourth quadrennial presidential election. It was held from October 31 to December 3, 1800. In what is sometimes referred to as the “Revolution of 1800”, Vice President Thomas Jefferson of the Democratic-Republican Party defeated incumbent President John Adams of the Federalist Party. The election was a political realignment that ushered in a generation of Democratic-Republican leadership.