SELECT "Date of Polling" FROM table_35785 WHERE "Polling Firm" = 'forum research' AND "Green" = '7' AND "Liberal" < '30'
On what date of polling was the Polling Firm forum research with 7 green and less than 30 liberals?
CREATE TABLE table_35785 (
    "Polling Firm" text,
    "Date of Polling" text,
    "Link" text,
    "Liberal" real,
    "Green" real
)