CREATE TABLE table_24498 ("District" TEXT, "Vacator" TEXT, "Reason for change" TEXT, "Successor" TEXT, "Date successor seated" TEXT)

In what district was the successor seated August 31, 1943?
SELECT "District" FROM table_24498 WHERE "Date successor seated" = 'August 31, 1943'
SELECT "District" FROM "table_24498" WHERE "Date successor seated" = 'August 31, 1943'