Who is the winning party/coalition name in election year 1980?
CREATE TABLE "table1_23512864_4" (
  "election_year" real,
  "assembly" text,
  "winning_party_coalition" text,
  "chief_minister" text,
  "speaker" text
);
SELECT "winning_party_coalition" FROM "table1_23512864_4" WHERE "election_year"=1980;