How many people were first elected when john roane was the incumbent?
CREATE TABLE table_2668243_25 (first_elected VARCHAR, incumbent VARCHAR)
SELECT COUNT(first_elected) FROM table_2668243_25 WHERE incumbent = "John Roane"
### Context: CREATE TABLE table_2668243_25 (first_elected VARCHAR, incumbent VARCHAR) ### Question: How many people were first elected when john roane was the incumbent? ### Answer: SELECT COUNT(first_elected) FROM table_2668243_25 WHERE incumbent = "John Roane"