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_1342218_17 ( candidates VARCHAR, party VARCHAR, incumbent VARCHAR )

### Question ###
List all candidates in the democratic party where the election had the incumbent Frank Chelf running.

### Accurate SQL ###

SELECT candidates FROM table_1342218_17 WHERE party = "Democratic" AND incumbent = "Frank Chelf"