You mean major election_s_, right? I do seem to remember the Democrats crowing about how Obama's team had used social media to their advantage and Republicans were hopelessly outmatched in this arena.
http://swampland.time.com/2012/11/20/friended-how-the-obama-...
Fun tidbits:
> But the Obama team had a solution in place: a Facebook application that will transform the way campaigns are conducted in the future. For supporters, the app appeared to be just another way to digitally connect to the campaign. But to the Windy City number crunchers, it was a game changer. “I think this will wind up being the most groundbreaking piece of technology developed for this campaign,” says Teddy Goff, the Obama campaign’s digital director.
> That’s because the more than 1 million Obama backers who signed up for the app gave the campaign permission to look at their Facebook friend lists. In an instant, the campaign had a way to see the hidden young voters. Roughly 85% of those without a listed phone number could be found in the uploaded friend lists.
Whoa, that sounds exactly like the "breach" we're talking about here!
And a former Obama staffer confirms this: https://www.theblaze.com/news/2018/03/20/ex-obama-staffer-cl... (yeah yeah "I don't trust your source", but it's just screenshots straight from the horse's mouth).
Money quotes:
> Facebook was surprised we were able to suck out the whole social graph, but they didn’t stop us once they realized that was what we were doing.
> They came to office in the days following election recruiting & were very candid that they allowed us to do things they wouldn’t have allowed someone else to do because they were on our side.