CREATE TABLE table_25027 ("District" TEXT, "Vacator" TEXT, "Reason for change" TEXT, "Successor" TEXT, "Date successor seated" TEXT)

Who was the latest to take office in Massachusetts 3rd district?
SELECT "Successor" FROM table_25027 WHERE "District" = 'Massachusetts 3rd'
SELECT "Successor" FROM "table_25027" WHERE "District" = 'Massachusetts 3rd'