user: Question:  how many first elected with district being North Carolina 2
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['North Carolina 1', 'Herbert Covington Bonner', 'Democratic', 1940.0, 'Re-elected', 'Herbert Covington Bonner (D) Unopposed']
SQL:

assistant: SELECT COUNT("First elected") FROM "Table" WHERE "District" = 'North Carolina 2';