For quite some time now (October 2005 is the earliest post I could find quickly, but I know I've been saying it since well before that), I've been adamant that the winning message for Democrats in 2006 is an anti-corruption, clean-government, the-GOP-is-power-drunk campaign. And wouldn't you know if they aren't starting to listen. Look at this new video released by the Jon Tester campaign attacking Montana Senator (and Abramoff crony extraordinare) Conrad Burns. Oh it feels good to watch. Check out The Billings Gazette on the matter too.
Meanwhile, Rick Santorum, by far the most endangered 2006 incumbent, is getting nailed on his connection to "The K Street Project," the GOP's on-going attempt to turn the entire lobbying community into an arm of the Republican party. Basic story: he denies that he had anything to do with them; folks point out he's lying. Not good for Ricky.
While I agree with Kevin Drum that the dynamics of the electoral map make a Democratic 1994 unlikely, I still think that the corruption issue will drive a few seats our way that we wouldn't be able to touch otherwise. And as folks come around to the notion that this is a Republican scandal, not a generic "congressional" one, I see this issue becoming only more potent as November approaches.