Question

The only Federalist President, John Adams, was defeated in the election of 1800 by

Answer 1

The only Federalist President, John Adams, was defeated in the election of 1800 by Thomas Jefferson

Answer 2

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 realigning election that ushered in a generation of Democratic-Republican rule.