OK, we already know that gets lots of money from Republicans and big business lobbyists:
Buried inside the annual report for Third Way is a revelation that the group relies on a peculiar DC consulting firm to raise half a million a year: Peck, Madigan, Jones & Stewart. Peck Madigan is no ordinary nonprofit buckraiser. The group is, in fact, a corporate lobbying firm that represents Deutsche Bank, Intel, the Business Roundtable, Amgen, AT&T, the International Swaps & Derivatives Association, MasterCard, New York Life Insurance, PhRMA and the US Chamber of Commerce, among others.
Of course it's more than that, we have Rmoney donors and bundlers on its board as well.
So, we already know who's paying the bills, and thus who they are speaking for.
My question is rather more specific, "Does the Third Way take money from Koch Brothers affiliated groups?"
Before you dismiss this out of hand, remember that the late (and very unlamented) Democratic Leadership Council (DLC) took Koch Money.
Also note that following the Citizen's United decision, laundering of political monies has become the way that many of these organization have conducted business, so the Kochtapus is even more Byzantine and opaque than it was in the mid-1980s when the DLC was founded.
It is reasonable to think that an organization that looks like the DLC, and acts like the DLC, and smells like the DLC would have the same supporters as the DLC.
The Third Way org certainly acts like a bunch of Koch whores.