Table:
text: Opinion polling for the United States gubernatorial elections, 2008
Washington
Washington
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

text: Opinion polling for the United States gubernatorial elections, 2008
Washington
Washington
Source_ Dates_administered Democrat_Christine_Gregoire Republican_Dino_Rossi Lead_Margin
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

Question: In the opinion poll for the 2008 United States gubernatorial election, Washington, what is the source of the poll that had Republican: Dino Rossi at 46%, Democrat: Christine Gregoire at 50%, and the lead was greater than 3?