CREATE TABLE table_8093 ("Poll Source" TEXT, "Dates administered" TEXT, "Democrat: Dick Durbin" TEXT, "Republican: Steve Sauerberg" TEXT, "Lead Margin" FLOAT)

Which poll put Dick Durbin at 56%?
SELECT "Poll Source" FROM table_8093 WHERE "Democrat: Dick Durbin" = '56%'
SELECT "Poll Source" FROM "table_8093" WHERE "Democrat: Dick Durbin" = '56%'