Iowa Admin. Code r. 821-3.5
A request for a list of registered voters submitted to a county commissioner may be honored by that commissioner, or may be forwarded to the registrar. However, a county commissioner shall adhere to a consistent policy regarding the provision of lists. If a commissioner provides a list to any requester, the commissioner shall likewise provide lists to all requesters, provided the commissioner has the data and software necessary to meet the list request specifications. Similarly, if a commissioner refuses to provide a list for which the commissioner has the necessary data and software to any requester, the commissioner shall refuse all requests for lists of registered voters.