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_name_21 (liberal_ticket VARCHAR, free_libertarian_ticket VARCHAR)

### Question ###
The Liberal Ticket listed which candidate when Jack A. Martin was listed on the Free Libertarian Ticket?

### Accurate SQL ###

SELECT liberal_ticket FROM table_name_21 WHERE free_libertarian_ticket = "jack a. martin"