What is the SZDSZ percentage with a Jobbik of 5% and a Fidesz of 68%?
CREATE TABLE "opinion_polls" (
  "source" text,
  "date" text,
  "fidesz" text,
  "mszp" text,
  "szdsz" text,
  "jobbik" text,
  "others" text
);
SELECT "szdsz" FROM "opinion_polls" WHERE "jobbik"='5%' AND "fidesz"='68%';