user: Question: Which Poll source has Pat Toomey of 23%?
Columns: ['Poll source', 'Dates administered', 'Arlen Specter*', 'Pat Toomey', 'Tom Ridge*', 'Peg Luksik']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Suffolk', 'May 13, 2010', '––', '60%', '––', '9%']
SQL:

assistant: SELECT "Poll source" FROM "Table" WHERE "Pat Toomey" = '23%';