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_17538810_10 ( lead_margin VARCHAR, dates_administered VARCHAR )

### Question ###
How many different lead margins were stated in the poll administered on September 11, 2008?

### Accurate SQL ###

SELECT COUNT(lead_margin) FROM table_17538810_10 WHERE dates_administered = "September 11, 2008"