Okla. Const. art. II, § 9A
§ 9A. Death penalty - Method of execution.
All statutes of this state requiring, authorizing, imposing or relating to the death penalty are in full force and effect, subject to legislative amendment or repeal by statute, initiative or referendum. Any method of execution shall be allowed, unless prohibited by the United States Constitution. Methods of execution may be designated by the Legislature. A sentence of death shall not be reduced on the basis that a method of execution is invalid. In any case in which an execution method is declared invalid, the death sentence shall remain in force until the sentence can be lawfully executed by any valid method. The death penalty provided for under such statutes shall not be deemed to be, or to constitute, the infliction of cruel or unusual punishments, nor shall such punishment be deemed to contravene any other provision of this Constitution.
Added by Laws 2015, SJR 31, Section 1, State Question 776, Legislative Referendum 367, adopted at election held November 8, 2016.