Early Voting Begins Thursday for Oklahoma’s Presidential Primary (Oklahoma City) – Early voting for Oklahoma’s Mar. 5 Presidential Preferential Primary begins Thursday at 8 am for voters across the state. Early voting will be held Thursday, Feb. 29, and Friday, Mar. 1, from 8 am to 6 pm and Saturday, Mar. 2, from 8 am to 2 pm A list of early voting locations is available on the State Elec...