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_20597634_3 (poll_source VARCHAR, scott_mcadams__d_ VARCHAR)
### Question:
When 30% is scott mcadams (d) percentage how many poll sources are there?
### Answer:
SELECT COUNT(poll_source) FROM table_20597634_3 WHERE scott_mcadams__d_ = "30%"