The Democratic Party and Whig Party were the dominant political parties from the early 1830s up until the mid-1850s. Both were institutions in national politics despite not having a coherent national organization by cobbling together a diverse group of states to win elections. While the Democrats had a more populist agenda, the Whigs were more focused on pursuing industrialization and development of the country. See David Potter, The Impending Crisis: America Before the Civil War, 1848-1861, 226. While the Democratic Party would survive to the present day, the Whig Party would not survive the mid-1850s, not as a result of its own ineptness but because of the changing political landscape of that era. Read more
With the first term of Millard Fillmore’s presidency winding down in 1852, the Democrats felt a sense of momentum that they could reclaim the White House. In the midterm elections of 1850, the Democrats secured 140 of the 233 seats in the House of Representatives, eclipsing the Whig Party. See David Potter, The Impending Crisis: America Before the Civil War, 1848-1861, 141.