What is shadow lobbying? How influence peddlers shape policy in the dark

Sunlight Foundation: Earlier this year, we asked you to help us find out which Democratic superdelegates are also lobbyists. We didn’t want to limit it to just registered lobbyists, because there’s an increasing number of people in Washington who do what most of us would think of as lobbying activity, but avoid registering — known as “shadow lobbyists.” 

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