CREATE TABLE table_203_615 (id NUMBER, "district" CLOB, "incumbent" CLOB, "party" CLOB, "first\ elected" NUMBER, "result" CLOB, "candidates" CLOB)

which party had the most candidates , republican or democratic ?
SELECT "party" FROM table_203_615 WHERE "party" IN ('republican', 'democratic') GROUP BY "party" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "party" FROM "table_203_615" WHERE "party" IN ('republican', 'democratic') GROUP BY "party" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY