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

### Instruction:
How many people voted for Obama in the county where McCain got 72.75% of the votes?

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

### Response:
SELECT MIN Obama# FROM table WHERE McCain% = 72.75%