what is the earliest first elected with the results re-elected in the district south carolina 3?
CREATE TABLE "south_carolina" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "results" text,
  "candidates" text
);
SELECT MAX("first_elected") FROM "south_carolina" WHERE "results"='Re-elected' AND "district"='South Carolina 3';