Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_24497 ( "District" text, "Vacator" text, "Reason for change" text, "Successor" text, "Date successor seated" text )

### Question ###
Who is every vacator with reason for change as resigned December 31, 1959?

### Accurate SQL ###

SELECT "Vacator" FROM table_24497 WHERE "Reason for change" = 'Resigned December 31, 1959'