Final answer:
The party formed during the 1830s that was competitive against the Jacksonian Democratic Party was the Whig Party.
Step-by-step explanation:
The party that formed during the 1830s and was competitive against the Jacksonian Democratic Party was the Whig Party.
The Whig Party emerged in 1834 as an opposition party to President Andrew Jackson's policies and vision.
They promoted economic and judicial nationalism, advocating for a larger role for the federal government.