When 23% scott mcadams (d) what are the dates administered?
CREATE TABLE "polling" (
  "poll_source" text,
  "dates_administered" text,
  "joe_miller_r" text,
  "lisa_murkowski_r_write_in_candidate" text,
  "scott_mc_adams_d" text
);
SELECT "dates_administered" FROM "polling" WHERE "scott_mc_adams_d"='23%';