CREATE TABLE table_21044 ("Poll Source" CLOB, "Dates administered" CLOB, "Democrat: Mark Begich" CLOB, "Republican: Ted Stevens" CLOB, "Lead Maragin" FLOAT)

What was Mark Begich polling on October 6, 2008?
SELECT "Democrat: Mark Begich" FROM table_21044 WHERE "Dates administered" = 'October 6, 2008'
SELECT "Democrat: Mark Begich" FROM "table_21044" WHERE "Dates administered" = 'October 6, 2008'