This is a list of political parties in the United States, both past and present. The list does not include independents. Active parties Major parties Third parties Represented in state legislatures The following third parties have members in state legislatures affiliated with them. Represented in the legislature of the unincorporated territory of Puerto Rico The following third parties are represented in the Puerto Rican Legislature. Parties with ballot access for Congress, state legislatures, or territorial legislatures The following third parties have ballot access in at least one state and are not represented in a national office, state legislature, or territorial legislature. Multi-state or territory Single state or territory Active parties without ballot access The following parties have been active in the past 4 years, but as of December 2021 did not have official ballot access in any state. Multi-state or territory Single state or territory Historical parties Held national office or elected to Congress Multi-State political parties Single state political parties Political parties in the unincorporated territories Non-electoral organizations Active These organizations generally do not nominate candidates for election, but some of them have in the past; they otherwise function similarly to political parties. Historical These historical organizations did not officially nominate candidates for election, but may have endorsed or supported campaigns; they otherwise functioned similarly to political parties. See also Political parties in the United States List of frivolous political parties List of ruling political parties by country List of political parties in Puerto Rico List of state parties of the Democratic Party List of state Green Parties in the United States List of state parties of the Libertarian Party List of state parties of the Republican Party Party system Political party strength in U.S. states Politics of the United States Third party (United States) Two-party system Notes Notes Footnotes Further reading External links Party Links Political Parties Timeline Ballot Access News Politics1 Directory of Candidates Independent Political Candidate Directory at IndeCan Educational quiz that matches policy answers to U.S. political parties known as I Side With United States Political parties