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_name_86 (lead_margin INTEGER, dates_administered VARCHAR)
### Question:
Name the average Lead Margin on  november 13-november 19, 2007?
### Answer:
SELECT AVG(lead_margin) FROM table_name_86 WHERE dates_administered = "november 13-november 19, 2007"