How many groups of candidates are there in there in the district where the incumbent is Doc Hastings?
CREATE TABLE table_1420 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "Elected" real,
    "Status" text,
    "2008 Candidates" text,
    "Results" text
)
SELECT COUNT("2008 Candidates") FROM table_1420 WHERE "Incumbent" = 'Doc Hastings'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many groups of candidates are there in there in the district where the incumbent is Doc Hastings? ### Input: CREATE TABLE table_1420 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "Elected" real,
    "Status" text,
    "2008 Candidates" text,
    "Results" text
) ### Response: SELECT COUNT("2008 Candidates") FROM table_1420 WHERE "Incumbent" = 'Doc Hastings'