I believe the general name for this sort of thing if “moral trade”; see this paper by Toby Ord: http://www.amirrorclear.net/files/moral-trade.pdf. But yeah, this is something we’ve struggled with a bit, including trying not to use the word “matching” in our emails describing the concept. I think the best donor-oriented framing we have right now is “making a deal” with a donor for the other side. So maybe “political donation dealmaking”? But that sounds someone clunky to me.