https://www.theverge.com/2018/5/24/17390156/twitter-political-advertising-guidelines-transparency-rules

Today, Twitter announced new guidelines and stricter disclosure rules around political advertisements on its platform in response to widespread concern over Russian interference in the 2016 US election. The new rules, which the company refers to as the Political Campaigning Policy, are slated to go live this summer in the US and are designed to tell advertisers how Twitter differentiates a political ad from a standard, non-political one and what methods it will use to make the identity of the advertiser available to the public. Political advertisers can also now apply for certification through Twitter’s dedicated online process.

“As part of this new policy, we will require advertisers who want to run political campaigning ads for Federal elections to self-identify and certify that they are located in the US. Candidates and committees will have to provide their FEC ID, and non-FEC registered organizations and individuals will have to submit a notarized form,” explains Bruce Falck, the revenue product general manager at Twitter, and Vijaya Gadde, Twitter’s policy and legal chief, in a blog post. The duo says that once the necessary forms are received, the company will send a letter to the appropriate party to validate the identity and location of the advertiser.