Koch-Linked Group Releases Ad Backing G.O.P. Candidate for Harry Reid’s Seat

As early as Wednesday, television viewers across Nevada will start to see an ad showing military veterans voicing their support for Representative Joe Heck, the Republican challenger for Mr. Reid’s seat when he retires at the end of his term. The ad is part of a $700,000 broadcast and digital buy from the Concerned Veterans for America, an organization dedicated to overhauling the Veterans Affairs Department from a conservative viewpoint and part of the vast political network affiliated with the conservative billionaires Charles G. and David H. Koch.