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

### Instruction:
What percentage of the votes did Obama get in the county where 3909 people voted in total?

### Inputs:
table_name: table, columns: ['County', 'Obama%', 'Obama#', 'McCain%', 'McCain#', 'Total']

### Response:
SELECT Obama% FROM table WHERE Total = 3909