DCorps has just released "On the Offensive: First Survey of the 2008 Battleground Districts," and the findings envision an "immense opportunity" for Democratic congressional candidates to win more seats in 2008. The survey, which included a large interview sample of 1,600 respondents, covered 70 "in-play" congressional districts "half Democratic and half Republican," and found:

Democratic congressional candidates in this named ballot hold an average 9-point lead in these districts that actually supported the Republican candidate by 1 point in 2006 and President Bush by 8 points in 2004. This means the center of the battlefield has shifted as much since 2006 as it did in the lead up to it.

Even more striking, Dem incumbents are ahead by 20 points, 56-36 percent, and the strength extends to districts held by freshmen elected in '06, and to rural-small town and exurban areas, as well as to more traditional Democratic constituencies.

The survey also found that "Iraq is central to the changing battlefield," and the public wants congressional Dems to provide leadership "that will force the President to change policies and reduce the number of troops in Iraq." The survey includes other interesting findings about voters beliefs and priorities regarding health insurance for children, energy independence, student loans, stem cell research and immigration.