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

### Instruction:
Where is the poll source when Hillary clinton was the democrat, john mccain was the republican, and the margin of error was less than 4.5 on May 2-7, 2007?

### Inputs:
table_name: table, columns: ['Poll Source', 'Sample Size', 'Margin of Error', 'Date', 'Democrat', 'Republican']

### Response:
SELECT Poll Source FROM table WHERE Democrat = hillary clinton AND Margin of Error < 4.5 AND Republican = john mccain AND Date = may 2-7, 2007