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_16185956_1 (incumbent VARCHAR)

### Question ###
How many groups of candidates are there in there in the district where the incumbent is Doc Hastings?

### Accurate SQL ###

SELECT COUNT(2008 AS _candidates) FROM table_16185956_1 WHERE incumbent = "Doc Hastings"