Which dates of polls occur in the Mizoram state?
CREATE TABLE "chhattisgarh_result" (
  "state" text,
  "date_of_polls" text,
  "seats_a_cs" real,
  "date_of_counting" text,
  "incumbent" text,
  "election_winner" text
);
SELECT "date_of_polls" FROM "chhattisgarh_result" WHERE "state"='Mizoram';