The United States of America has two primary political parties that generally control government at the federal, state, county and municipal level. They are the Republican Party and the Democratic Party, each of which has affiliated parties of the same name registered in each of the States and territories.

In addition, there are a number of minor or "third parties." Some are national in scope and some are limited to a particular state or locality.

Third parties with national scope include the:

• Constitution Party
• Green Party
• Libertarian Party

Although widely spoken of in a national context, the Tea Party is not an organized political party, but the name of a conservative, activist viewpoint that is represented by many locally and regionally organized minor parties.

Other minor parties with national aspirations include:

• America First Party
• American Conservative Party
• American Freedom Party
• America's Party
• Black Riders Liberation Party
• Christian Liberty Party*
• Citizens Party of the United States
• Communist Party USA
• Freedom Socialist Party
• Independent American Party
• Justice Party
• Modern Whig Party
• National Socialist Movement
• New Black Panther Party
• Objectivist Party
• Party for Socialism and Liberation
• Peace and Freedom Party
• Prohibition Party
• Reform Party of the United States of America
• Socialist Action
• Socialist Alternative
• Socialist Equality Party
• Socialist Party USA
• Socialist Workers Party
• Transhumanist Party
• United States Marijuana Party
• United States Pacifist Party
• United States Pirate Party
• Unity Party of America
• Veterans Party of America
• Workers World Party