Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Poll Source | Sample Size | Margin of Error | Date | Democrat | Republican |
| --- | --- | --- | --- | --- | --- |
| Quinnipiac | 1697.0 | 2.4 | Mar 19-24, 2008 | Hillary Clinton | John McCain |
| Quinnipiac | 1697.0 | 2.4 | Mar 19-24, 2008 | Barack Obama | John McCain |
| Rasmussen Reports | 500.0 | 4.5 | March 11, 2008 | Barack Obama | John McCain |
| Rasmussen Reports | 500.0 | 4.5 | March 11, 2008 | Hillary Clinton | John McCain |
| Rasmussen Reports | 500.0 | 4.5 | November 7, 2007 | Hillary Clinton | Rudy Giuliani |
| Rasmussen Reports | 500.0 | 4.5 | November 7, 2007 | Hillary Clinton | John McCain |
| Rasmussen Reports | 500.0 | 4.5 | November 7, 2007 | Hillary Clinton | Mitt Romney |
| Rasmussen Reports | 500.0 | 4.5 | November 7, 2007 | Hillary Clinton | Fred Thompson |
| Quinnipiac | 1029.0 | 3.1 | Nov 1-5, 2007 | Hillary Clinton | Rudy Giuliani |
| Quinnipiac | 1029.0 | 3.1 | Nov 1-5, 2007 | Hillary Clinton | John McCain |
| Quinnipiac | 1029.0 | 3.1 | Nov 1-5, 2007 | Hillary Clinton | Mitt Romney |
| Quinnipiac | 1029.0 | 3.1 | Nov 1-5, 2007 | Hillary Clinton | Fred Thompson |
| Quinnipiac | 1029.0 | 3.1 | Nov 1-5, 2007 | John Edwards | Rudy Giuliani |
| Quinnipiac | 1029.0 | 3.1 | Nov 1-5, 2007 | Barack Obama | Rudy Giuliani |
| Quinnipiac | 1391.0 | 2.6 | Oct 9-15, 2007 | Hillary Clinton | Rudy Giuliani |
| Quinnipiac | 1427.0 | 2.6 | May 2-7, 2007 | Hillary Clinton | Rudy Giuliani |
| Quinnipiac | 1427.0 | 2.6 | May 2-7, 2007 | Hillary Clinton | John McCain |
| Quinnipiac | 1427.0 | 2.6 | May 2-7, 2007 | Hillary Clinton | Fred Thompson |
| Quinnipiac | 1427.0 | 2.6 | May 2-7, 2007 | Barack Obama | Rudy Giuliani |
| Quinnipiac | 1427.0 | 2.6 | May 2-7, 2007 | Barack Obama | John McCain |
| Quinnipiac | 1427.0 | 2.6 | May 2-7, 2007 | Barack Obama | Fred Thompson |
| Quinnipiac | 1087.0 | 3.0 | Feb 9-12, 2007 | Hillary Clinton | Rudy Giuliani |
| Quinnipiac | 1087.0 | 3.0 | Feb 9-12, 2007 | Hillary Clinton | John McCain |
| Quinnipiac | 1087.0 | 3.0 | Feb 9-12, 2007 | Hillary Clinton | Mitt Romney |
| Quinnipiac | 1087.0 | 3.0 | Feb 9-12, 2007 | Chris Dodd | John McCain |
| Quinnipiac | 1087.0 | 3.0 | Feb 9-12, 2007 | John Edwards | John McCain |
| Quinnipiac | 1087.0 | 3.0 | Feb 9-12, 2007 | Barack Obama | John McCain |
Question:
What was the sample size for polling on May 2-7, 2007 for Hillary Clinton?
Answer:
1427, 1427, 1427