A Government Built to Divide Power
The United States is a constitutional federal republic with a presidential system. At the federal level, Congress writes laws, the president heads the executive branch, and the Supreme Court and lower courts exercise judicial power. These branches operate separately but share authority through constitutional checks and balances. Sovereignty is also divided: states retain powers not granted to the federal government or denied to them by the Constitution.
Every state has its own constitution and three branches of government. Beneath them are counties, municipalities, townships, school districts, and special districts. Local governments deliver much of daily life, from police and fire protection to education, housing, sanitation, and transportation. The system contained 90,837 local governments in 2022.
Elections and Political Parties
Most public officials are elected directly. The president is the major exception, chosen indirectly through the Electoral College. The Democratic and Republican parties have dominated American politics for more than a century, while plurality voting in single-member districts makes it difficult for third parties to win representation. Because national parties lack strong centralized control, their elected officials and factions often disagree.
Expansion and Dispute
Voting rights expanded from property-owning white men to women, racial minorities, and citizens aged 18 and older. Yet major criticisms remain. Residents of U.S. territories lack full voting representation, while gerrymandering, the Electoral College, equal Senate representation for states of unequal population, and campaign finance can separate government outcomes from majority preferences.
Political polarization, declining acceptance of election defeats, economic influence, and unequal representation of women and minorities have intensified concerns about democratic backsliding. American politics remains a paradox: its institutions invite mass participation while sometimes allowing organized minorities and powerful elites to shape outcomes disproportionate to their numbers.