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.
Okla. Stat. tit. 26, § 10-103