CREATE TABLE "table" (
  "district" text,
  "incumbent" text,
  "cook" text,
  "rothenberg" text,
  "cq_politics" text,
  "crystal_ball" text
);

Question: Who is the incumbent of district pa-8?
SQL: SELECT "incumbent" FROM "table" WHERE "district"='PA-8';

Question: How many incumbents are in district la-1?
SQL: SELECT COUNT("incumbent") FROM "table" WHERE "district"='LA-1';