user: Question: On November 14, 2007, how many different Republican: Jeff Sessions are there?
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 COUNT("Republican: Jeff Sessions") FROM "Table" WHERE "Dates administered" = 'November 14, 2007';