CREATE TABLE table_202_231 (id DECIMAL, "party" TEXT, "votes" DECIMAL, "%" DECIMAL, "seats" DECIMAL, "+/-" DECIMAL)

which party has the most seats in parliament ?
SELECT "party" FROM table_202_231 ORDER BY "seats" DESC LIMIT 1
SELECT "party" FROM "table_202_231" ORDER BY "seats" DESC NULLS LAST LIMIT 1