The 1844 United States presidential election was the 15th quadrennial presidential election, held from Friday, November 1 to Wednesday, December 4, 1844. Democrat James K. Polk narrowly defeated Whig Henry Clay in a close contest turning on the controversial issues of slavery and the annexation of the Republic of Texas. This is the only election in which both major party nominees served as Speaker of the House at one point, and the first in which neither candidate held elective office at the time.

The Democratic Party is one of the two major political parties of the United States political system and the oldest active political party in the country as well as in the world. The Democratic party was founded in 1828. It is also the oldest active voter-based political party in the world. The party has changed significantly during its nearly two centuries of existence. Once known as the party of the "common man," the early Democratic Party stood for individual rights and state sovereignty, and opposed banks and high tariffs. In the first decades of its existence, from 1832 to the mid-1850s, under Presidents Andrew Jackson, Martin Van Buren, and James K. Polk, the Democrats usually bested the opposition Whig Party by narrow margins.