The 1840 Democratic National Convention was held in Baltimore. The Democrats nominated Van Buren for reelection in 1840 in spite of his unpopularity. Vice President Johnson had so many enemies that he failed to gain renomination. The Democrats could not agree on any vice presidential candidate. As a result, Van Buren became the only presidential candidate in American history to seek election without a running mate. James K. Polk

James K. Polk

James Knox Polk was the 11th President of the United States . Polk was born in Mecklenburg County, North Carolina. He later lived in and represented Tennessee. A Democrat, Polk served as the 17th Speaker of the House of Representatives and the 12th Governor of Tennessee...

was an unsuccessful candidate for the vice presidential nomination. He received one electoral vote for vice president in the general election.