How many incumbents are there in Pennsylvania 5?
CREATE TABLE table_2668401_12 (incumbent VARCHAR, district VARCHAR)
SELECT COUNT(incumbent) FROM table_2668401_12 WHERE district = "Pennsylvania 5"
### Context: CREATE TABLE table_2668401_12 (incumbent VARCHAR, district VARCHAR) ### Question: How many incumbents are there in Pennsylvania 5? ### Answer: SELECT COUNT(incumbent) FROM table_2668401_12 WHERE district = "Pennsylvania 5"