CREATE TABLE table_204_683 (id DECIMAL, "no." DECIMAL, "constituency" TEXT, "winner candidate" TEXT, "party" TEXT, "votes" DECIMAL, "margin" DECIMAL)

which party had the most candidates win in this election ?
SELECT "party" FROM table_204_683 GROUP BY "party" ORDER BY COUNT("winner candidate") DESC LIMIT 1
SELECT "party" FROM "table_204_683" GROUP BY "party" ORDER BY COUNT("winner candidate") DESC NULLS LAST LIMIT 1