user: Question: How many different results were there for the number of votes fro Obama in the county where he got 27.8% of the votes?
Columns: ['County', 'Obama%', 'Obama#', 'McCain%', 'McCain#', 'Total']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['Alamance', '45.3%', 28590.0, '54.7%', 34501.0, 63091.0]
SQL:

assistant: SELECT COUNT("Obama#") FROM "Table" WHERE "Obama%" = '27.8%';