Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_2668347_17 (candidates VARCHAR, incumbent VARCHAR)
### Question:
Name the number of candidates for  samuel d. ingham
### Answer:
SELECT COUNT(candidates) FROM table_2668347_17 WHERE incumbent = "Samuel D. Ingham"