What is John Shadegg's First Elected date?
CREATE TABLE table_name_18 (first_elected INTEGER, incumbent VARCHAR)
SELECT AVG(first_elected) FROM table_name_18 WHERE incumbent = "john shadegg"
### Context: CREATE TABLE table_name_18 (first_elected INTEGER, incumbent VARCHAR) ### Question: What is John Shadegg's First Elected date? ### Answer: SELECT AVG(first_elected) FROM table_name_18 WHERE incumbent = "john shadegg"