Who conducted the poll with sample size of 2000 that shows 18% undecided?
CREATE TABLE table_20683381_2 (conductor VARCHAR, undecided VARCHAR, sample_size VARCHAR)
SELECT conductor FROM table_20683381_2 WHERE undecided = "18%" AND sample_size = 2000
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_20683381_2 (conductor VARCHAR, undecided VARCHAR, sample_size VARCHAR) Question: Who conducted the poll with sample size of 2000 that shows 18% undecided? [/INST] SELECT conductor FROM table_20683381_2 WHERE undecided = "18%" AND sample_size = 2000 </s>