When was the date of counting with less than 87 seats, INC as incumbent and INC as election winner?
CREATE TABLE "chhattisgarh_result" (
  "state" text,
  "seats_a_cs" real,
  "date_of_counting" text,
  "incumbent" text,
  "election_winner" text
);
SELECT "date_of_counting" FROM "chhattisgarh_result" WHERE "seats_a_cs"<87 AND "incumbent"='inc' AND "election_winner"='inc';