CREATE TABLE table_204_599 (id DECIMAL, "party" TEXT, "first duma" TEXT, "second duma" TEXT, "third duma" TEXT, "fourth duma" TEXT)

what group/party holds the largest number of second duma seats ?
SELECT "party" FROM table_204_599 ORDER BY "second duma" DESC LIMIT 1
SELECT "party" FROM "table_204_599" ORDER BY "second duma" DESC NULLS LAST LIMIT 1