To ultimately defeat the teabaggers I say the Dems should focus on defeating the moderate Repubs in purple districts in 2014. I live in Steve King's district in Iowa. Try as hard as you want you won't defeat him in 2014 - too much Repub red in the NW corner of Iowa. So focus on Tom Latham, who had to move into a purple district in Iowa in the last election and you've got a much better chance at the majority in the House.
In the past I'd have said we need the middle-of-road Repubs, but they are just sitting on their hands and taking up oxygen during the current fiscal crisis.
So let's focus on getting back the majority in the house. And let's do it by taking the low hanging fruit of moderate Repubs in purple districts. And with a Dem majority the teabaggers can just go suck whatever it is that they suck.