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.”