Which of the following best explains why the Democratic Party was formed in the 1820s? The Democratic-Republicans split into the Democratic and Republican parties, which are both still in existence. John Quincy Adams wanted to form a political party that would push for an increase in tariffs and would oppose slavery. Andrew Jackson wanted to become a member of the “eastern aristocracy” and felt forming a new political party was the best approach. Andrew Jackson felt betrayed by his loss in 1824 and wanted to create a political party that was not run by “aristocrats.”