Switzerland is a democratic federal republic. The federal legislative power is vested in the two chambers of the Federal Assembly, the National Council and the Council of States. The Federal Council holds the executive power and is composed by seven power-sharing Federal Councillors elected by the Federal Assembly. The judiciary branch is represented by the Federal Supreme Court of Switzerland, whose judges are elected by the Federal Assembly.
Switzerland has a tradition of direct democracy. For any change in the constitution, a referendum is mandatory (mandatory referendum); for any change in a law, a referendum can be requested (optional referendum). In addition, the people may present a constitutional popular initiative to introduce amendments to the federal constitution. The people also assumes a role similar to the constitutional court, which does not exist, and thus acts as the guardian of the rule of law.
Cantonal and municipal politics vary in the different cantons, which may have different systems.
Switzerland features a system of government not seen in any other nation: direct representation, sometimes called half-direct democracy (this may be arguable, because theoretically, the Sovereign of Switzerland is actually its entire electorate). Referenda on the most important laws have been used since the 1848 constitution.