You will see negative and obfuscating reactions against Brandon's article from the those described behind the following links. Such reactions will come from people in all sides of established politics and related business and academic interests. His piece tends to sort them out, doesn't it.
Heavy Hitters: Top All-Time Donors, 1989-2014 http://www.opensecrets.org/orgs/list.php American Fedn of State, County & Municipal Employees $60,949,129 [Democrat] 81% [Republican] 1%