CREATE TABLE table_21045 ("Poll Source" TEXT, "Dates administered" TEXT, "Democrat: Mark Begich" TEXT, "Republican: Ted Stevens" TEXT, "Lead Maragin" FLOAT)

When the poll source is research 2000/daily kos, what is the total number of dates administered?
SELECT COUNT("Dates administered") FROM table_21045 WHERE "Poll Source" = 'Research 2000/Daily Kos'
SELECT COUNT("Dates administered") FROM "table_21045" WHERE "Poll Source" = 'Research 2000/Daily Kos'