CREATE TABLE "table1_224794_3" (
  "district" text,
  "vacator" text,
  "reason_for_change" text,
  "successor" text,
  "date_successor_seated" text
);

Question: How many vacators were in the Pennsylvania 33rd district?
SQL: SELECT COUNT("vacator") FROM "table1_224794_3" WHERE "district"='Pennsylvania 33rd';

Question: Who was the successor for the Kentucky 2nd district?
SQL: SELECT "successor" FROM "table1_224794_3" WHERE "district"='Kentucky 2nd';