What is the percentage of "no party preference" where the democratic percentage is 24.8%?
CREATE TABLE "table1_27003223_4" (
  "city" text,
  "population" real,
  "registered_voters" text,
  "democratic" text,
  "republican" text,
  "d_r_spread" text,
  "other" text,
  "no_party_preference" text
);
SELECT "no_party_preference" FROM "table1_27003223_4" WHERE "democratic"='24.8%';