user: Question: Name the number of seats to be won being % of popular vote at 6.88%
Columns: ['Election', 'Leader', '# of candidates', '# of seats to be won', '# of seats won', '# of total votes', '% of popular vote']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'text']
Sample row: [1962.0, 'Tommy Douglas', 218.0, 265.0, 19.0, 1044754.0, '13.57%']
SQL:

assistant: SELECT "# of seats to be won" FROM "Table" WHERE "% of popular vote" = '6.88%';