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_17538810_10 (lead_margin VARCHAR, dates_administered VARCHAR)
### Question:
How many different lead margins were stated in the poll administered on September 11, 2008?
### Answer:
SELECT COUNT(lead_margin) FROM table_17538810_10 WHERE dates_administered = "September 11, 2008"