Oregon constitution
Article II: suffrage and elections
Section 18

(8) Such additional legislation as may aid the operation of this section shall be provided by the legislative assembly, including provision for payment by the public treasury of the reasonable special election campaign expenses of such officer. But the words, “the legislative assembly shall provide,” or any similar or equivalent words in this constitution or any amendment thereto, shall not be construed to grant to the legislative assembly any exclusive power of lawmaking nor in any way to limit the initiative and referendum powers reserved by the people.