CREATE TABLE "table1_2159537_3" (
  "district" text,
  "vacator" text,
  "reason_for_change" text,
  "successor" text,
  "date_successor_seated" text
);

Question: In what district was the successor seated August 31, 1943?
SQL: SELECT "district" FROM "table1_2159537_3" WHERE "date_successor_seated"='August 31, 1943';

Question: Who was the successor for the reason for change being "died January 16, 1944?
SQL: SELECT "successor" FROM "table1_2159537_3" WHERE "reason_for_change"='Died January 16, 1944';

Question: Who was the successor in New York 11th district?
SQL: SELECT "successor" FROM "table1_2159537_3" WHERE "district"='New York 11th';