<P> Since the 1930s, the Democrats positioned themselves more towards Liberalism while the Conservatives increasingly dominated the GOP . But new voter coalitions emerged during the latter half of the 20th Century, with Conservatives and the Republicans becoming dominant in the South, rural areas, and suburbs; while Liberals and the Democrats increasingly started to rely on a coalition of African - Americans, Hispanics and white urban Progressives . </P> <P> Although American politics have been dominated by the two - party system, several other political parties have also emerged throughout the country's history . The oldest third party was the Anti-Masonic Party and was formed in upstate New York in 1828; the party's creators feared the Freemasons, believing they were a powerful secret society that was trying to rule the country in defiance of republican principles . </P> <P> The modern political party system in the U.S. is a two - party system dominated by the Democratic Party and the Republican Party . These two parties have won every United States presidential election since 1852 and have controlled the United States Congress to some extent since at least 1856 . </P> <P> The Democratic Party is one of two major political parties in the U.S. Founded in 1828 by Andrew Jackson, it is the oldest extant voter - based political party in the world . </P>

When did the democrats and republicans become the two major parties
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