Oklahoma constitution
Article II: bill of rights
Section 19

In all criminal cases where imprisonment for more than six (6) months is authorized the entire number of jurors must concur to render a verdict. In all other cases three-fourths (3/4) of the whole number of jurors concurring shall have power to render a verdict. When a verdict is rendered by less than the whole number of jurors, the verdict shall be signed by each juror concurring therein.