user: Question: What was McCain's percentage when Obama had 64.39% of the vote?
Columns: ['Parish', 'Obama%', 'Obama#', 'McCain%', 'McCain#']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Acadia', '26.77%', 7028.0, '73.23%', 19228.0]
SQL:

assistant: SELECT "McCain%" FROM "Table" WHERE "Obama%" = '64.39%';