The Politico reports that Jim Walsh [NY-25] cut a $1,000 donation to Edolphus "Ed" Towns, a Democrat from NY-10. Towns has been in Congress for 25 years, representing a district that's been Democratic since the 1940's.
In other words, Ed's not only a Democrat, he doesn't need the money. Yet, as far as I can tell, Walsh has given nothing to Randy Kuhl. I think that says more about Walsh than it does about Kuhl, but what, exactly, it says about Walsh is beyond my ken.