Political participation encompasses all the ways citizens engage with the political system to influence government decisions and public policy. While voting is the most recognized form of participation, Americans engage through a wide spectrum of activities including campaigning, contacting elected officials, joining interest groups, donating to candidates or PACs, protesting, serving on juries, running for office, and engaging in online activism.
The U.S. electoral system shapes participation through its structure: winner-take-all single-member districts favor a two-party system, the Electoral College determines presidential outcomes rather than the national popular vote, and primary elections allow party members to select nominees. Voter turnout in the United States is lower than most other established democracies, driven by structural barriers (registration requirements, Tuesday voting), demographic factors (age, income, education), and psychological factors (political efficacy, mobilization).
Campaign finance has become a defining feature of American elections. The Federal Election Commission regulates contributions to candidates, but Supreme Court decisions including Buckley v. Valeo (1976) and Citizens United v. FEC (2010) have expanded the role of money in politics by equating spending with speech. PACs, Super PACs, and dark money organizations now play major roles in funding campaigns and shaping public debate.