<Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The list of Oregon ballot measures lists all statewide ballot measures to the present . </P> <P> In Oregon, the initiative and referendum process dates back to 1902, when the efforts of the Direct Legislation League prompted amending the Oregon Constitution for the first time since 1859 . The process of initiative and referendum became nationally known as the Oregon System . </P> <P> There are three types of ballot measures: initiatives, referendums, and referrals . Initiatives and referendums may be placed on the ballot if their supporters gather enough signatures from Oregon voters; the number of signatures is a percentage based on the number of voters casting ballots in the most recent election for the Governor of Oregon . </P>

When did oregon becomes first state to pass initiative referendum laws