Tall tales about a national Democrat resurrection in 2006 notwithstanding, individual donors continue to pour comparatively more money into GOP organization coffers. The notable exception is the National Republican Senatorial Committee, likely because of the "moderate" GOP group in that body.
In other words, a Dem takeover looks very unlikely unless they can figure out a way to be more conservative than the Republicans. Meanwhile, we have some breathing room to demand some more accountability from our Republican elected officials. That is a good thing.