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"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1341453_40 (candidates VARCHAR, incumbent VARCHAR) Question: How many candidates ran in the election where Mike Doyle was the incumbent?  [/INST] SELECT COUNT(candidates) FROM table_1341453_40 WHERE incumbent = "Mike Doyle" </s>