Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Richard Mentor Johnson was the ninth Vice President of the United States, serving in the administration of Martin Van Buren. He was the only vice-president ever elected by the United States Senate under the provisions of the Twelfth Amendment. Johnson also represented Kentucky in the U.S. House of Representatives and Senate and began and ended his political career in the Kentucky House of Representatives.