What's the percentage of undecided according to the poll source with sampling error of 2.7%?
CREATE TABLE table_20032301_3 (undecided VARCHAR, sampling_error VARCHAR)
SELECT undecided FROM table_20032301_3 WHERE sampling_error = "2.7%"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: 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%? [/INST] SELECT undecided FROM table_20032301_3 WHERE sampling_error = "2.7%" </s>