What's the percentage of votes for other candidates in the county where Bush got 51.6% of the votes?
CREATE TABLE "by_county" (
  "county" text,
  "kerrypct" text,
  "kerrynum" real,
  "bushpct" text,
  "bushnum" real,
  "otherspct" text,
  "othersnum" real
);
SELECT "otherspct" FROM "by_county" WHERE "bushpct"='51.6%';