CREATE TABLE "12_seats_needed_for_a_majority" (
  "date_released" text,
  "institute" text,
  "socialist" text,
  "social_democratic" text,
  "green_communist" text,
  "left_bloc" text,
  "people_s_party" text,
  "lead" text
);

Question: Name the people's party for social democratic of 30.1%
SQL: SELECT "people_s_party" FROM "12_seats_needed_for_a_majority" WHERE "social_democratic"='30.1%';

Question: Name the lead with left bloc of 8.4%
SQL: SELECT "lead" FROM "12_seats_needed_for_a_majority" WHERE "left_bloc"='8.4%';

Question: Name the lead for institute of election results and social democratic of 31.7% 8 seats
SQL: SELECT "lead" FROM "12_seats_needed_for_a_majority" WHERE "institute"='election results' AND "social_democratic"='31.7% 8 seats';