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

### Instruction:
WHAT CANDIDATE HAD A MARGIN OF ERROR OF ± 4.5%, WHEN PAT TOOMEY WAS 45% AND JOE SESTAK WAS 38%?

### Inputs:
table_name: table, columns: ['Poll source', 'Date(s) administered', 'Sample size', 'Margin of error', 'Joe Sestak (D)', 'Pat Toomey (R)', 'Other', 'Undecided']

### Response:
SELECT Other FROM table WHERE Margin of error = ± 4.5% AND Pat Toomey (R) = 45% AND Joe Sestak (D) = 38%