CREATE TABLE "united_states_house_of_representatives_e" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "result" text,
  "candidates" text
);

Question: What was the candidates for hardie scott
SQL: SELECT "candidates" FROM "united_states_house_of_representatives_e" WHERE "incumbent"='Hardie Scott';

Question: What is the number of candidates for pennsylvania 3
SQL: SELECT COUNT("candidates") FROM "united_states_house_of_representatives_e" WHERE "district"='Pennsylvania 3';

Question: What is the number of candidates for pennsylvania 21
SQL: SELECT COUNT("candidates") FROM "united_states_house_of_representatives_e" WHERE "district"='Pennsylvania 21';

Question: What is the party for first elected 1948 for william t. granahan
SQL: SELECT "party" FROM "united_states_house_of_representatives_e" WHERE "first_elected"=1948 AND "incumbent"='William T. Granahan';