List of political parties in the US

Alaskan Independence Party
Aloha Aina Party
America First Party (2002 - )
American Patriot Party (2003 - )
American Party (1969 - )
American Independent Party (1968 - )
American Heritage Party
American Nazi Party
American Patriot Party
American Reform Party
Charter Party of Cincinnati, Ohio
Christian Freedom Party (2004 - )
Communist League (US)
Communist Party USA
Concord Party
Connecticut for Lieberman Party (2006 - )
Conservative Party of New York
Constitution Party (formerly U.S. Taxpayers Party) (1992 - )
Covenant Party (Northern Mariana Islands)
Democratic Party (c.1792 - )
Green Party (1996 - )
Independence Party of Minnesota
Independence Party of New York
Independent American Party
Independent Citizens Movement (US Virgin Islands)
Labor Party (1995 - )
Liberal Party of Minnesota
Liberal Party of New York
Libertarian Party (1971 - )
Liberty Union Party (Vermont) (1970 - )
Marijuana Party
Marijuana Reform Party (New York)
Moderate Party (2005 - )
Mountain Party (West Virginia)
New Party
New Progressive Party of Puerto Rico
New Union Party
New York State Right to Life Party
Peace and Freedom Party (1967 - )
Personal Choice Party (1997 - )
Pirate Party
Popular Democratic Party of Puerto Rico
Populist Party of Maryland (Nader 2004-affiliated, unrelated to earlier so-named parties)
Populist Party of America
Prohibition Party (1867 - )
Puerto Rican Independence Party
Reform Party of the United States of America (1995 - )
Republican Moderate Party of Alaska
Republican Party (1854 - )
Social Democrats USA
Socialist Action (1983 - )
Socialist Alternative (1986 - )
Socialist Equality Party (1953 - )
Socialist Labor Party (1876 - )
Socialist Party USA (1972 - )
Socialist Workers Party (1938 - )
Southern Party
Southern Independence Party
United Party (Idaho)
United Citizens Party
Vermont Progressive Party
Voter Rights Party
Workers World Party (1959 - )
Working Families Party
Workers Party, USA
World Socialist Party of the United States

Historical political parties

(before 1824)
Federalist Party (c.1789 - 1816)
Democratic-Republican Party (1792 - c.1824)

(1824–1854)
National Republican Party (1828 - 1833)
Anti-Masonic Party (1828 - 1833)
Whig Party (1833-1856)
Liberty Party (1840 - 1848)
Free Soil Party (1848 - 1854)

(1854–1896)
American Party (“Know-Nothings”) (c. 1854 - 1858)
Opposition Party (1854-1858)
Constitutional Union Party (1860)
National Union Party, (1864 - 1868)
Liberal Republican Party (1872)
Greenback Party (1874 - 1884)
Anti-Monopoly Party (1884)
Populist Party (1892 - 1908)
National Democratic Party/Gold Democrats (1896 - 1900)

(1896–1932)
Social Democratic Party (1900 - 1901)
Home Rule Party of Hawaii (created to serve native Hawaiian agenda in the state legislature and US Congress) (1900 - 1912)
Socialist Party of America (1901 - 1973)
Progressive Party 1912 (“Bull Moose Party”) (1912 - 1914)
Non-Partisan League (Not a party in the technical sense) (1915 - 1956)
Farmer-Labor Party (1918 - 1944)
Progressive Party 1924 (1924)
Communist League of America (1928 - 1934)

(1932–1964)
American Workers Party (1933 - 1934)
Workers Party of the United States (1934 - 1938)
Union Party (1936)
American Labor Party (1936 - 1956)
America First Party (1944) (1944 - 1996)
States' Rights Democratic Party (“Dixiecrats”) (1948)
Progressive Party 1948 (1948 - 1955)
Vegetarian Party (1948–1964)
Constitution Party (United States 50s) (1952-1968 ?)
Puerto Rican Socialist Party (1959 - 1993)
Mississippi Freedom Democratic Party (1964)

Late 20th century
Communist Workers Party (1969 - 1985)
People's Party (1971 - 1976)
U.S. Labor Party (1975-1979)
Citizens Party (1979–1984)
New Alliance Party (1979 - 1992)
Christian Falangist Party of America (1985-2006)
Populist Party 1990's (1984 - 1994)
Looking Back Party (1984 - 1996)
Grassroots Party (1986-2004)
Independent Party of Utah (1988-1996)
Greens/Green Party USA (1991-2005)
Natural Law Party (1992 - 2004)