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_16751596_13 (dates_administered VARCHAR, poll_source VARCHAR)
### Question:
When the poll source is research 2000/daily kos, what is the total number of dates administered? 
### Answer:
SELECT COUNT(dates_administered) FROM table_16751596_13 WHERE poll_source = "Research 2000/Daily Kos"