Oklahoma constitution
Article VI: executive power
Section 12

Every bill passed by the Legislature, making appropriations of money embracing distinct items, shall, before it becomes a law, be presented to the Governor; if he disapproves the bill, or any item, or appropriation therein contained, he shall communicate such disapproval, with his reasons therefore, to the house in which the bill shall have originated, but all items not disapproved shall have the force and effect of law according to the original provisions of the bill. Any item or items so disapproved shall be void, unless repassed by a two-thirds vote, according to the rules and limitations prescribed in the preceding section in reference to other bills: Provided, That this section shall not relieve emergency bills of the requirement of the three-fourths vote.