Question: What was the sample size for polling on May 2-7, 2007 for Hillary Clinton?
SQL: SELECT "Sample Size" FROM "2-16670191-1" WHERE "Date" = 'May 2-7, 2007' AND "Democrat" = 'Hillary Clinton';

Question: Who was the republican when hillary clinton was the democrat and the sample size was more than 1087 with a margin of error of 2.6?
SQL: SELECT "Republican" FROM "2-16670191-1" WHERE "Sample Size" > 1087.0 AND "Democrat" = 'hillary clinton' AND "Margin of Error" = 2.6;

Question: Where is the poll source when Hillary Clinton was the democrat, John McCain was the republican, and the margin of error was less than 4.5 on May 2-7, 2007?
SQL: SELECT "Poll Source" FROM "2-16670191-1" WHERE "Democrat" = 'Hillary Clinton' AND "Margin of Error" < 4.5 AND "Republican" = 'John McCain' AND "Date" = 'May 2-7, 2007';

Question: What si the total sample size at rasmussen reports when the margin of error was bigger than 4.5?
SQL: SELECT COUNT("Sample Size") FROM "2-16670191-1" WHERE "Poll Source" = 'rasmussen reports' AND "Margin of Error" > 4.5;

Question: What is the date that the polls were going on at Quinnipiac when John McCain was the republican, Barack Obama was the democrat and the sample size was bigger than 1427?
SQL: SELECT "Date" FROM "2-16670191-1" WHERE "Republican" = 'John McCain' AND "Poll Source" = 'Quinnipiac' AND "Democrat" = 'Barack Obama' AND "Sample Size" > 1427.0;