2 party system a bad thing?

[FishHooks]

I think interest groups are what has really screwed up american politics. That was the main thing madison talked about/refered to in federalist 10 regarding factions. I think he would be amazed how much they have grown, and I myself also believe they are out of controll. But one of the things he talks about is not controlling the existence of factions but limiting their control, and he says thats basically the job of democracy. I really dont know how us voters let these interest groups have so much controll.