The document discusses the history and development of the two-party system in the United States. It traces the rise of the current Democratic and Republican parties from early divisions between Federalists and Anti-Federalists. Third parties like the Libertarian and Green parties currently play a minor role in the system. Different countries have various party systems, ranging from dominant, non-partisan, and single-party, to two-party and multi-party systems. The Democrats and Republicans differ in their policy platforms, with Democrats generally more liberal and Republicans more conservative. Political parties are organized at the national, state, and local levels through elections. Political machines and corruption, like Tammany Hall, have led to reforms checking party power. Candidates