Name the most abama number for mccain being 29266
CREATE TABLE "by_county" (
  "county" text,
  "obamapct" text,
  "obamanum" real,
  "mc_cainpct" text,
  "mc_cainnum" real,
  "otherspct" text,
  "othersnum" real,
  "total" real
);
SELECT MAX("obamanum") FROM "by_county" WHERE "mc_cainnum"=29266;