The 1844 US presidential election saw Martin Van Buren and Henry Clay as the initial front runners for the Democratic and Whig parties, respectively. However, the annexation of Texas was a divisive issue, and Van Buren's opposition to it cost him the Democratic nomination. James K. Polk emerged as a "dark horse" candidate for the Democrats due to his support for Texas annexation and prior association with Andrew Jackson. Polk defeated Clay in the general election, with the Democrats using the slogan "54-40 or fight!" regarding territorial claims in the Pacific Northwest.