Political parties similar to or like Democratic Party (United States)

One of the two major contemporary political parties in the United States, along with its main, historic rival, the Democratic Party. Founded in 1854 by opponents of the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. Wikipedia

Oldest voter-based political party in the world and the oldest existing political party in the United States. The party's modern institutions were formed in the 1830s and 1840s. Wikipedia

American electoral politics has been dominated by two major political parties since shortly after the founding of the republic. Since the 1850s, they have been the Democratic Party and the Republican Party. Wikipedia

Political party in the United States that promotes civil liberties, non-interventionism, laissez-faire capitalism, and limiting the size and scope of government. Conceived in August 1971 at meetings in the home of David F. Nolan in Westminster, Colorado, and was officially formed on December 11, 1971 in Colorado Springs, Colorado. Wikipedia

Generally based on American liberalism, contrasting with the conservatism of the Republican Party. The party has large centrist and progressive wings, as well as smaller conservative and socialist elements. Wikipedia

One of the two major political parties in the United States. Second-oldest extant political party in the United States; its chief rival, the Democratic Party, is the oldest. Wikipedia