A referendum or referendum is a legal procedure by which laws or administrative acts are subject to popular vote for ratification. It is the mechanism of direct democracy by antonomasia and nowadays it also complements the regime of participatory democracy, promoting the direct intervention of the electoral body. It is a decision-making procedure by which citizens exercise the right to vote to decide on a resolution decision by expressing their agreement or disagreement. To reach the agreement there must be an absolute majority among the votes.