CREATE TABLE table_73401 ("District" TEXT, "Vacator" TEXT, "Reason for change" TEXT, "Successor" TEXT, "Date successor seated" TEXT)

Who is the successor when the reason for change is seat declared vacant January 2, 1808
SELECT "Successor" FROM table_73401 WHERE "Reason for change" = 'Seat declared vacant January 2, 1808'
SELECT "Successor" FROM "table_73401" WHERE "Reason for change" = 'Seat declared vacant January 2, 1808'