How many candidates ran in the election where Mike Doyle was the incumbent? 
CREATE TABLE table_1341453_40 (candidates VARCHAR, incumbent VARCHAR)
SELECT COUNT(candidates) FROM table_1341453_40 WHERE incumbent = "Mike Doyle"
### Context: CREATE TABLE table_1341453_40 (candidates VARCHAR, incumbent VARCHAR) ### Question: How many candidates ran in the election where Mike Doyle was the incumbent?  ### Answer: SELECT COUNT(candidates) FROM table_1341453_40 WHERE incumbent = "Mike Doyle"