Question: Which Loera has a Source of SurveyUSA, and a Date of May 16–May 18, 2008?
SQL: SELECT "Loera" FROM "2-15638491-2" WHERE "Source" = 'SurveyUSA' AND "Date" = 'May 16–May 18, 2008';

Question: Which Goberman has a Date of April 28–April 30, 2008?
SQL: SELECT "Goberman" FROM "2-15638491-2" WHERE "Date" = 'April 28–April 30, 2008';

Question: Which Neville has a Novick of 23%?
SQL: SELECT "Neville" FROM "2-15638491-2" WHERE "Novick" = '23%';

Question: Which Goberman has an Obrist of 2%, and a Merkley of 34%?
SQL: SELECT "Goberman" FROM "2-15638491-2" WHERE "Obrist" = '2%' AND "Merkley" = '34%';

Question: Which Novick has a Source of SurveyUSA, and a Neville of 8%?
SQL: SELECT "Novick" FROM "2-15638491-2" WHERE "Source" = 'SurveyUSA' AND "Neville" = '8%';

Question: Which Date has a Novick of 26%?
SQL: SELECT "Date" FROM "2-15638491-2" WHERE "Novick" = '26%';