Cong. Andrew Johnson, D-TN, was named governor of Tennessee by President Lincoln. In 1864, Lincoln chose Johnson (a Tennessean) as his running mate for President. Following Lincoln´s reelection, Johnson was sworn in as vice-president. After Lincoln´s assassination in 1865, Johnson became the 17th US president. Johnson was very unpopular, however. In 1868 he became the first US President to be impeached, and his removal from office failed by just ONE vote.