There are no Oklahoma state laws against open or conceal carry in a polling or voting place but the building can be declared as a no gun area by the owner/renter etc.. and must posted per law as a no guns allowed area.........public access parking lots are covered by Oklahoma laws and firearms can be stored in your vehicle
There are specific laws regarding carry in certain places, e.g. schools, government leased facility, etc, location used to do business with the public. You know the drill.