The next person elected president after Abraham Lincoln was Ulysses S. Grant, in 1868. However, though not elected, Andrew Johnson became the 17th U.S. president following Lincoln's assassination. As vice president, Johnson succeeded Lincoln and served the remainder of his term.
Andrew Johnson had a difficult presidency and was eventually impeached, although he was not convicted. In 1868, he attempted to get the Democratic Party's nomination to run in the next election, however, they chose Horatio Seymour instead. The Republican candidate was Ulysses S. Grant, the general who led the Union forces during the Civil War. Using Johnson's failures against the Democratic party, Grant was elected as the 18th president of the United States at the age of 46. He served two terms.