text: 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_20683381_2 (conductor VARCHAR, undecided VARCHAR, sample_size VARCHAR)
  ### Question:
  Who conducted the poll with sample size of 2000 that shows 18% undecided?
  ### Answer:
  SELECT conductor FROM table_20683381_2 WHERE undecided = "18%" AND sample_size = 2000