The Democratic Party is one of the two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled a wide cadre of politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s. The party is a big tent, and though it is often described as liberal, it is less ideologically uniform than the Republican Party due to the broader list of unique voting blocs that compose it. The historical predecessor of the Democratic Party is considered to be the Democratic-Republican Party. Before 1860, the Democratic Party supported expansive presidential power, the interests of slave states, agrarianism, and expansionism, while opposing a national bank and high tariffs. It split in 1860 over slavery and won the presidency only twice between 1860 and 1910. In the late 19th century, it continued to oppose high tariffs and had fierce internal debates on the gold standard. In the early 20th century, it supported progressive reforms and opposed imperialism, with Woodrow Wilson winning the White House in 1912 and 1916. Since Franklin D. Roosevelt and his New Deal coalition after 1932, the Democratic Party has promoted a social liberal platform, including Social Security and unemployment insurance. The New Deal attracted strong support for the party from recent European immigrants but caused a decline of the party's conservative pro-business wing. Following the Great Society era of progressive legislation under Lyndon B. Johnson, including Medicare, the Civil Rights Act of 1964, and the Voting Rights Act of 1965, the core bases of the parties shifted, with the Southern states becoming more reliably Republican and the Northeastern states becoming more reliably Democratic. The party's labor union element has become smaller since the 1970s, and as the American electorate shifted in a more conservative direction following Ronald Reagan's presidency, the election of Bill Clinton marked a move for the party toward the Third Way, adopting market-oriented economic policies and culturally liberal policies.