Some "big money" is more equal than others.
From their "Values and Vision" page:
The 2012 election was the most expensive election in U.S. history– over $7 billion dollars was spent at the federal level alone. More than half of all disclosed campaign spending came from less than one tenth of one percent (0.1%) of all Americans. The 25 largest donors collectively contributed $261 million in disclosed contributions and tens of millions more in undisclosed contributions as well.
A list of those Evil Top 25 donors can be found here. Ironically, one of the "Convenors" and three of the "Endorsers" are on this list.
While corporations aren't "people," unions somehow are. Why? Shut up.
It becomes clearer every day how much "progressivism" depends on their target audience not actually thinking.