A democracy is a form of government that strives to provide all citizens with an equal voice, or vote, in determining state policy, regardless of their level of socioeconomic status. Another important fundamental of the democratic state is the establishment and governance of a just and comprehensive constitution that delineates the roles and responsibilities of leaders and citizens alike. Democracies, in general, ensure certain basic rights for their citizens. First and foremost, citizens are free to organize political parties and hold elections. Leaders, once elected, must abide by the terms of the given nation’s constitution and are limited in the powers they can exercise, as well as in the length of the duration of their terms. Most democratic societies also champion freedom of individual speech, the press, and assembly, and they prohibit unlawful imprisonment. Of course, even in a democratic society, the government constrains citizens' total freedom to act however they wish. A democratically elected government does this by passing laws and writing regulations that, at least ideally, reflect the will of the majority of its people. Although the United States champions the democratic ideology, it is not a “pure” democracy. In a purely democratic society, all citizens would vote on all proposed legislation, and this is not how laws are passed in the United States. There is a practical reason for this: a pure democracy would be hard to implement. Thus, the United States is a constitution-based federal republic in which citizens elect representatives to make policy decisions on their behalf. The term representative democracy, which is virtually synonymous with republic, can also be used to describe a government in which citizens elect representatives to promote policies that favor their interests. In the United States, representatives are elected at local and state levels, and the votes of the Electoral College determine who will hold the office of president. Each of the three branches of the U.S. government—the executive, judicial, and legislative—is held in check by the other branches.