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:
| Source | Dates administered | Democrat: Christine Gregoire | Republican: Dino Rossi | Lead Margin |
| --- | --- | --- | --- | --- |
| Survey USA | November 2, 2008 | 52% | 46% | 6 |
| Survey USA | October 27, 2008 | 50% | 48% | 2 |
| Rasmussen Reports | October 22, 2008 | 50% | 48% | 2 |
| Survey USA | October 13, 2008 | 48% | 47% | 1 |
| Rasmussen Reports | October 2, 2008 | 48% | 48% | 0 |
| Survey USA | September 21–22, 2008 | 50% | 48% | 2 |
| Strategic Vision | September 14–16, 2008 | 46% | 48% | 2 |
| Rasmussen Reports | September 10, 2008 | 46% | 52% | 6 |
| Elway Poll | September 6–8, 2008 | 48% | 44% | 4 |
| Survey USA | September 5–7, 2008 | 47% | 48% | 1 |
| Survey USA | August 11–12, 2008 | 50% | 48% | 2 |
| Rasmussen Reports | August 6, 2008 | 50% | 46% | 4 |
| Elway Poll | July 27–31, 2008 | 52% | 36% | 16 |
| Strategic Vision | July 25–27, 2008 | 47% | 45% | 2 |
| Survey USA | July 13–15, 2008 | 49% | 46% | 3 |
| Moore Information | July 9–10, 2008 | 45% | 45% | 0 |
| Rasmussen Reports | July 9, 2008 | 52% | 44% | 6 |
| Elway Poll | June 18–22, 2008 | 47% | 39% | 8 |
| Rasmussen Reports | June 9, 2008 | 50% | 43% | 7 |
| SurveyUSA | June 7–9, 2008 | 50% | 47% | 3 |
| Rasmussen Reports | May 12, 2008 | 52% | 41% | 11 |
| SurveyUSA | April 7, 2008 | 48% | 47% | 1 |
| Rasmussen Reports | April 2, 2008 | 47% | 46% | 1 |
| Rasmussen Reports | February 28, 2008 | 46% | 47% | 1 |
| University of Washington | February 7–18, 2008 | 53.7% | 42.1% | 11.6 |
| Strategic Vision | October 5–7, 2007 | 47% | 45% | 2 |
Question:
How many polls show a result where democrat Christine Gregoire was polling at 50% and had a lead margin of 2?
Answer:
4.0