Oklahoma City — During a June 4 gathering at Bedlam Barbecue in northeast Oklahoma City, gubernatorial candidate Chip Keating said the closing days of this year’s Republican primary campaign for the state’s chief executive officer’s job would be, he knew, “a grind.” Aiming at his three opponents, Mazzei asserted, “I am running against three gentlemen who are frankly part of the problem.” He described all three of his top opponents (Mike Mazzei, Gentner Drummond, and Charles McCall) as...