Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_1805191_48 (first_elected VARCHAR, district VARCHAR)
### Question:
How many categories of first elected are in Washington 4 district? 
### Answer:
SELECT COUNT(first_elected) FROM table_1805191_48 WHERE district = "Washington 4"