The DNC establishes rules for the caucuses and primaries which choose delegates to the Democratic National Convention, but the caucuses and primaries themselves are most often run not by the DNC but instead by each individual state. Primary elections, in particular, are invariably conducted by state governments according to their own laws. Political parties may choose to participate or not participate in a state's primary election, but no political party executives have any jurisdiction over the dates of primary elections, or how they are conducted.