Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Who is the incumbent when the elected year is 2004, the status is re-elected and the party is republican?

### Inputs:
table_name: table, columns: ['District', 'Incumbent', 'Party', 'Elected', 'Status', '2010 Candidates']

### Response:
SELECT Incumbent FROM table WHERE Elected = 2004 AND Status = Re-elected AND Party = Republican