CREATE TABLE "opinion_polls" (
  "date_s_released" text,
  "polling_institute" text,
  "nationalist" text,
  "labour" text,
  "democratic_alternative" text,
  "undecided_no_answer" text,
  "lead" text
);

Question: Which polling institute showed a lead of 6%?
SQL: SELECT "polling_institute" FROM "opinion_polls" WHERE "lead"='6%';

Question: Which date released had a Democratic Alternative value of 1% and Labour of 34%?
SQL: SELECT "date_s_released" FROM "opinion_polls" WHERE "democratic_alternative"='1%' AND "labour"='34%';

Question: What is the Nationalist share of the poll for the response in which Undecided/No Answer received 29.2%?
SQL: SELECT "nationalist" FROM "opinion_polls" WHERE "undecided_no_answer"='29.2%';

Question: What is the value of the Democratic Alternative for the poll released by Malta Today?
SQL: SELECT "democratic_alternative" FROM "opinion_polls" WHERE "polling_institute"='malta today';

Question: Which polling institute showed a lead of 12% and a Labour share of the poll at 40.2%?
SQL: SELECT "polling_institute" FROM "opinion_polls" WHERE "lead"='12%' AND "labour"='40.2%';