Answer:
Jefferson's political party, the Democratic-Republican Party, believed in states rights over a strong central government.
Explanation:
Founded by Thomas Jefferson and James Madison as the Republican Party (not to be confused with today's Republican Party) in 1792, the Democratic-Republican Party was the dominant political party in the United States from 1800 to 1828 when the party split and the victors within the party decided to change its name to the Democratic Party. Opponents of the party formed the National Republican Party, which after the defeat of Henry Clay in the 1832 presidential election, formed the Whig Party, whose supporters in 1856 transitioned to the newly formed Republican Party. The term Democratic-Republican has been given it by historians in retrospect.
The Democratic-Republican Party's opponent was the Federalist Party.
The Republican Democratic Party represented the philosophy or ideology of Antifederalism, the ideology that defended the rights of the States of the United States against the Federal Government; Jefferson and his supporters made an interpretation of the Constitution of the United States that reduced powers to the Federal Government and instead increased the autonomy of the States.