How many candidates ran against barratt o'hara?
CREATE TABLE table_1342198_13 (
    candidates VARCHAR,
    incumbent VARCHAR
)
SELECT COUNT(candidates) FROM table_1342198_13 WHERE incumbent = "Barratt O'Hara"
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 candidates ran against barratt o'hara? ### Input: CREATE TABLE table_1342198_13 (
    candidates VARCHAR,
    incumbent VARCHAR
) ### Response: SELECT COUNT(candidates) FROM table_1342198_13 WHERE incumbent = "Barratt O'Hara"