what is the maximum lead margin on august 5, 2008?
CREATE TABLE table_72802 (
    "Poll Source" text,
    "Dates administered" text,
    "Democrat: John Kerry" text,
    "Republican: Jeff Beatty" text,
    "Lead Margin" real
)
SELECT MAX("Lead Margin") FROM table_72802 WHERE "Dates administered" = 'August 5, 2008'
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: what is the maximum lead margin on august 5, 2008? ### Input: CREATE TABLE table_72802 (
    "Poll Source" text,
    "Dates administered" text,
    "Democrat: John Kerry" text,
    "Republican: Jeff Beatty" text,
    "Lead Margin" real
) ### Response: SELECT MAX("Lead Margin") FROM table_72802 WHERE "Dates administered" = 'August 5, 2008'