Question: How many parties is the incumbent Bob Brady a member of?
SQL: SELECT COUNT("Party") FROM "1-1341423-38" WHERE "Incumbent" = 'Bob Brady';

Question: How many candidates were there in the district won by Joe Hoeffel?
SQL: SELECT COUNT("Candidates") FROM "1-1341423-38" WHERE "Incumbent" = 'Joe Hoeffel';

Question: Who were the candidates in district Pennsylvania 3?
SQL: SELECT "Candidates" FROM "1-1341423-38" WHERE "District" = 'Pennsylvania 3';

Question: What's the first elected year of the district whose incumbent is Jim Greenwood?
SQL: SELECT MAX("First elected") FROM "1-1341423-38" WHERE "Incumbent" = 'Jim Greenwood';