Which Poll Source has a Date administered of october 30 – november 2, 2008?
CREATE TABLE "polling" (
  "poll_source" text,
  "date_administered" text,
  "democrat" text,
  "republican" text,
  "lead_margin" real
);
SELECT "poll_source" FROM "polling" WHERE "date_administered"='october 30 – november 2, 2008';