The Biggest Recipients of Special Interest Money

Which candidates are the biggest recipients of contributions from special interest groups (including three mentioned or alluded to in the most recent Democratic debate)? Using data from the Center for Responsive Politics, I attempted to answer this question. A brief point regarding Trump: he routinely says that he's not taking money from special interest groups (and the data to some extent confirms this). But since Trump is the special interest (boasting about buying off both Democratic and Republican politicians) this amounts to saying, “I’m better than the other candidates because I’m not influencing myself!”