WHAT DATE DID JOE SESTAK HAVE 46% WITH ± 3.0% MARGIN OF ERROR?
CREATE TABLE "polling" (
  "poll_source" text,
  "date_s_administered" text,
  "sample_size" real,
  "margin_of_error" text,
  "joe_sestak_d" text,
  "pat_toomey_r" text,
  "other" text,
  "undecided" text
);
SELECT "date_s_administered" FROM "polling" WHERE "joe_sestak_d"='46%' AND "margin_of_error"='± 3.0%';