The Politics of the Philippines takes place in an organized framework of a presidential, representative, and democratic republic whereby the president is both the head of state and the head of government within a pluriform multi-party system. This system revolves around three separate and sovereign yet interdependent branches: the legislative branch, the executive branch, and the judicial branch. Executive power is exercised by the government under the leadership of the president. Legislative power is vested in both the government and the two-chamber congress—the Senate (the upper chamber) and the House of Representatives (the lower chamber). Judicial power is vested in the courts with the Supreme Court of the Philippines as the highest judicial body.