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 candidate (poll_source VARCHAR)
  ### Question:
  Which poll resource provided the most number of candidate information?
  ### Answer:
  SELECT poll_source FROM candidate GROUP BY poll_source ORDER BY COUNT(*) DESC LIMIT 1