An average of the most recent polls shows that the Democrats have widened their lead to 12.5 points.

This pretty much sums it up - when even the rightwing FOX News releases a poll of likely voters that shows the Democrats 16 points ahead of the Republicans...wow...barring some kind of miracle, it's very clear that the GOP is gonna lose control of Congress in two months.

http://www.realclearpolitics.com/epolls/2006/house/us/generic_congressional_ballot-22.html

Poll Date Sample GOP (R) Dems (D) Spread
RCP Average 08/22 - 08/30 - 37.5 50.0 Dems +12.5
FOX News 08/29 - 08/30 900 RV 32 48 Dems +16.0
Cook/RT Strategies 08/25 - 08/27 801 RV 40 51 Dems +11.0
Newsweek 08/24 - 08/25 1002 Adults 38 50 Dems +12.0
Time 08/22 - 08/24 1002 Adults 40 51 Dems +11.0