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_2417445_4 (date_of_successors_taking_office VARCHAR, successor VARCHAR)

### Question ###
When rudolph kleberg (d) is the successor what is the date of successors taking office?

### Accurate SQL ###

SELECT date_of_successors_taking_office FROM table_2417445_4 WHERE successor = "Rudolph Kleberg (D)"