user: Question: How many times did Robin Hayes run?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Results', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['North Carolina 1', 'G. K. Butterfield', 'Democratic', 2004.0, 'Re-elected', 'G.K. Butterfield (D) unopposed']
SQL:

assistant: SELECT COUNT("Candidates") FROM "Table" WHERE "Incumbent" = 'Robin Hayes';