Angered by a delay in the receipt of his voter registration card, a Louisiana man today threatened election officials, claiming that he urgently needed to cast a ballot to “keep the nigger out of office,” according to police. Wade Williams, 75, was arrested this morning on a felony terrorizing charge after allegedly calling the Registrar of Voters and warning that he would come to the state office and empty his shotgun unless he got his registration card. Using profanity and racial slurs,