user: Question: Which Poll Source has a Republican Jim Risch of 43%?
Columns: ['Poll Source', 'Dates administered', 'Democrat: Larry LaRocco', 'Republican: Jim Risch', 'Lead Margin']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Research 2000/Daily Kos', 'September 16-September 17, 2008', '33%', '56%', 23.0]
SQL:

assistant: SELECT "Poll Source" FROM "Table" WHERE "Republican: Jim Risch" = '43%';