Okla. Stat. tit. 34, § 12
When the ballot title has been decided upon, the Secretary of State shall, in writing, notify the Governor, who forthwith shall issue a proclamation setting forth the substance of the measure and the date on which the vote will be held.
R.L. 1910, § 3379; [C.S. 1921, § 6635]; [St. 1931, § 5878]; Amended by Laws 1975, HB 1233, c. 263, § 4, emerg. eff. June 4, 1975.