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

### Instruction:
What is the district with the candidates leven powell (f) 63.8% roger west (dr) 36.4%?

### Inputs:
table_name: table, columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']

### Response:
SELECT District FROM table WHERE Candidates = Leven Powell (F) 63.8% Roger West (DR) 36.4%