...the Republicans are in trouble - almost as much trouble as they were
in 2006. Democrats are not only ahead in the most competitive Republican districts (Tier 1), but they also lead by 3 points in the second tier, less competitive Republican seats, which means there might well be additional Congressional seats at risk beyond the 35. The extent of Republicans' vulnerabilities suggests that Democrats can take their advantage far into Republican territory in 2008. This pattern that allowed the Democrats to take 30 seats in the last mid-term election could well take Democrats up to 20 in the Presidential, unless confounded by intervening events. There really could be another wave election.
Also, check out Democracy Corps' Battleground List, and note that Tom Davis is in Tier 1, while Bob Goodlatte and Thelma Drake are in Tier 2 - vulnerable.
In sum, "The Democrats are in a strong position to hold on to their majority in the House and
make significant inroads into Republican territory." Not a bad position to be in right now. Too bad things in this country had to get so bad under Republican (mis)rule to bring us this point.