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_10 (date VARCHAR, undecided VARCHAR)
### Question:
Which date had the undecided percentage at 42%?
### Answer:
SELECT date FROM table_name_10 WHERE undecided = "42%"