Murdoch's WSJ claims Chamber of Commerce is not “overtly partisan”

Put in the awkward position of reporting on its corporate owners, the GOP-friendly WSJ acknowledges today that News Corps recently donated $1 million to the conservative, pro-business Chamber of Commerce.

But look at how the Journal describes the organization:

While not an overtly partisan group, the Washington-based Chamber of Commerce is investing millions in support of GOP congressional candidates this year. In all, the camber says it plans to spend $75 million on the 2010 midterm elections.

So, the chamber is not overly partisan. It's just spending tens of millions of dollars to elect Republicans this fall. Hmm, imagine if the chamber were a partisan organization.

Question: Has the chamber ever spent tens of millions to elect Democrats?