Or. Const. art. XVII, § 2

(1) In addition to the power to amend this Constitution granted by section 1, Article IV, and section 1 of this Article, a revision of all or part of this Constitution may be proposed in either house of the Legislative Assembly and, if the proposed revision is agreed to by at least two-thirds of all the members of each house, the proposed revision shall, with the yeas and nays thereon, be entered in their journals and referred by the Secretary of State to the people for their approval or rejection, notwithstanding section 1, Article IV of this Constitution, at the next regular state-wide primary election, except when the Legislative Assembly orders a special election for that purpose. A proposed revision may deal with more than one subject and shall be voted upon as one question. The votes for and against the proposed revision shall be canvassed by the Secretary of State in the presence of the Governor and, if it appears to the Governor that the majority of the votes cast in the election on the proposed revision are in favor of the proposed revision, he shall, promptly following the canvass, declare, by his proclamation, that the proposed revision has received a majority of votes and has been adopted by the people as the Constitution of the State of Oregon or as a part of the Constitution of the State of Oregon, as the case may be. The revision shall be in effect as the Constitution or as a part of this Constitution from the date of such proclamation.

(2) Subject to subsection (3) of this section, an amendment proposed to the Constitution under section 1, Article IV, or under section 1 of this Article may be submitted to the people in the form of alternative provisions so that one provision will become a part of the Constitution if a proposed revision is adopted by the people and the other provision will become a part of the Constitution if a proposed revision is rejected by the people. A proposed amendment submitted in the form of alternative provisions as authorized by this subsection shall be voted upon as one question.

(3) Subsection (2) of this section applies only when:

(a) The Legislative Assembly proposes and refers to the people a revision under subsection (1) of this section; and

(b) An amendment is proposed under section 1, Article IV, or under section 1 of this Article; and

(c) The proposed amendment will be submitted to the people at an election held during the period between the adjournment of the legislative session at which the proposed revision is referred to the people and the next regular legislative session.