https://www.recode.net/2017/10/30/16571598/read-full-testimony-facebook-twitter-google-congress-russia-election-fake-news

Facebook, Google and Twitter plan to tell congressional investigators this week that the scope of Russia’s campaign to spread disinformation on their sites — and to potentially disrupt the 2016 U.S. presidential race — is much broader than the companies initially reported.

At Facebook, roughly 126 million users in the United States may have seen posts, stories or other content created by Russian government-backed trolls around Election Day, according to a source familiar with the company’s forthcoming testimony to Congress. Previously, Facebook had only shared information on ads purchased by Kremlin-tied accounts, revealing that they reached more than 10 million U.S. users.