Okla. Stat. tit. 26, § 26-10-103: Election of Presidential Electors

On the first Tuesday after the first Monday in November in each

year next preceding the expiration of the term of office of each

President of the United States, the registered voters of this state

shall elect a number of electors for President and Vice President

equal to the number of United States Senators and United States

Representatives which the state is entitled to elect. Said electors

shall be elected in the same manner as is provided for state

officers.