user: Question: Who run for office in district Maryland 3?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Results', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Maryland 1', 'Wayne Gilchrest', 'Republican', 1990.0, 'Re-elected', 'Wayne Gilchrest (R) 69% Irving Pinder (D) 31%']
SQL:

assistant: SELECT "Candidates" FROM "Table" WHERE "District" = 'Maryland 3';