user: Question: On July 31, 2008, what are the Democrat: Vivian Davis Figures percentages?
Columns: ['Poll Source', 'Dates administered', 'Democrat: Vivian Davis Figures', 'Republican: Jeff Sessions', 'Lead Margin']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Survey USA', 'October 28, 2008', '32%', '65%', 33.0]
SQL:

assistant: SELECT "Democrat: Vivian Davis Figures" FROM "Table" WHERE "Dates administered" = 'July 31, 2008';