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_20032301_3 (undecided VARCHAR, sampling_error VARCHAR)
### Question:
What's the percentage of undecided according to the poll source with sampling error of 2.7%?
### Answer:
SELECT undecided FROM table_20032301_3 WHERE sampling_error = "2.7%"