A legislative referral (or legislative referendum) is a referendum in which a legislature puts proposed legislation up for popular vote. This may either be voluntarily or, as is the case in many countries for a constitutional amendment, as a mandatory part of the procedure for passing a law. These referrals, depending on the location, can either amend a constitution or enact a change in statute. It is a form of direct democracy. In some places it is known as an authorities referendum, authorities plebiscite, government initiated referendum, or top-down referendum It may originate from the legislative branch, executive branch, or a combination of the two.