The Iowa Future Fund is running ads that are lying about Chet Culver's record. The group has apparently incorporated itself as a 501c4, so it can refuse to disclose its donors. Basically, they are claiming that their intent is not to influence elections, despite the fact that all they have ever done is try to smear the big lug.
The organization's spokesperson is David Kochel, who claims he is the only person who will speak for the Future Fund ever. Give him a call at 515-865-6077 to let him know how you feel about his organization, or email him at email@example.com to demand that the group disclose its donors. Let us know what kind of response you get.