user: Question: What is Re-elected Incumbent Jerry Costello's First elected date?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Results']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Illinois 1', 'Bobby Rush', 'Democratic', 1992.0, 'Re-elected']
SQL:

assistant: SELECT "First elected" FROM "Table" WHERE "Results" = 'Re-elected' AND "Incumbent" = 'Jerry Costello';