user: Question: What percentage of voters chose McCain in the county where 2.1% of voters voted third party?
Columns: ['County', 'Obama %', 'Obama #', 'McCain %', 'McCain #', 'Others %', 'Others #']
Types: ['text', 'text', 'real', 'text', 'real', 'text', 'real']
Sample row: ['Atlantic', '56.9%', 67830.0, '41.8%', 49902.0, '1.3%', 1157.0]
SQL:

assistant: SELECT "McCain %" FROM "Table" WHERE "Others %" = '2.1%';