; and (II) has 50,000,000 or more unique monthly United States visitors or users for a majority of months during the preceding 12 months; or (ii) is a third-party advertising vendor that has 50,000,000 or more unique monthly United States visitors in the aggregate on any advertisement space that it has sold or bought for a majority of months during the preceding 12 months, as measured by an independent digital ratings service accredited by the Media Ratings Council (or its successor). (B) Exemption Such term shall not include any online platform that is a distribution facility of any broadcasting station or newspaper, magazine, blog, publication, or periodical. (C) Third-party advertising vendor defined For purposes of this subsection, the term third-party advertising vendor includes any third-party advertising vendor network, advertising agency, advertiser, or third-party advertisement serving company that buys and sells advertisement space on behalf of unaffiliated third-party websites, search engines, digital applications, or social media sites. (4) Qualified political advertisement For purposes of this subsection, the term qualified political advertisement means any advertisement (including search engine marketing, display advertisements, video advertisements, native advertisements, and sponsorships) that— (A) is made by or on behalf of a candidate; or (B) communicates a message relating to any political matter of national importance, including— (i) a candidate; (ii) any election to Federal office