what's district with candidates being curt weldon (r) 61.3% bill spingler (d) 38.7%
CREATE TABLE "united_states_house_of_representatives_e" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "result" text,
  "candidates" text
);
SELECT "district" FROM "united_states_house_of_representatives_e" WHERE "candidates"='Curt Weldon (R) 61.3% Bill Spingler (D) 38.7%';