Third party (United States)

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Third parties in the United States are political parties other than the two major parties that participate in national and state elections, although there may actually be more than three parties. Historically, the U.S. has a two-party system. Following Duverger's law, the Electoral College with its "winner take all" award of electors in presidential elections has, over time, created the two-party system. Another contributing factor is the division of the government into three separate branches which differs from the parliamentary system.

Although third parties rarely win elections, they play an important role in democratic government. Third parties draw attention to issues that may be ignored by the majority parties. If the issue finds resonance with the voter, one or more of the major parties may adopt the issue into its own party platform. Also a third party may be used by the voter to cast a protest vote as if in a referendum on an important issue. Third parties do help voter turnout bringing more people to the polls.citation needed] Currently 75% of the U.S. electorate consists of registered Democrats (42.5%) and registered Republicans (32.5%), with "independents" and those belonging to other parties consitituting 24.9% of the electorate.