Publication 417, Nonprofit USPS Marketing Mail Eligibility: Nonprofit and Other Qualified Organizations > 5 Cooperative Mailings > 5-4 Political Committee Mailings > 5-4.3 Endorsements on Mail
Mailings by qualified political committees often bear endorsements such as “Paid for by [committee] and authorized by [candidate].” These endorsements are often required by federal or state law. The presence of these endorsements alone does not disqualify the mailing from being sent at the nonprofit prices. The presence of factors discussed in the preceding sections of this chapter is required to find the mailing ineligible for the nonprofit prices.