When was Quantum Research's poll conducted?
CREATE TABLE table_20683381_2 (
    date_of_opinion_poll VARCHAR,
    conductor VARCHAR
)
SELECT date_of_opinion_poll FROM table_20683381_2 WHERE conductor = "Quantum Research"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: When was Quantum Research's poll conducted? ### Input: CREATE TABLE table_20683381_2 (
    date_of_opinion_poll VARCHAR,
    conductor VARCHAR
) ### Response: SELECT date_of_opinion_poll FROM table_20683381_2 WHERE conductor = "Quantum Research"