https://techcrunch.com/2017/11/01/instagram-election-interference/

Facebook detailed the extent of Russia’s election interference campaign on Instagram today during its second congressional hearing. Facebook general counsel Colin Stretch said that 120,000 posts by Russian election attackers reached 16 million Americans from October through the election, and the posts reached an additional 4 million Americans prior to October.

That’s on top of the 126 million Americans reached by Russian election propaganda on Facebook. It’s unclear if these two groups overlap, but if not that would bring the total number to 146 million Americans. That’s a big climb from the original 10 million figure Facebook originally announced as the audience of Russian election interference.