What's the number of McCain votes in the county where Obama got 35.7% and others got 1.9% of the votes?
CREATE TABLE "by_county" (
  "county" text,
  "obamapct" text,
  "obamanum" real,
  "mc_cainpct" text,
  "mc_cainnum" real,
  "otherspct" text,
  "others" real,
  "total" real
);
SELECT MIN("mc_cainnum") FROM "by_county" WHERE "obamapct"='35.7%' AND "otherspct"='1.9%';