Please read this thread that provides proper context to sharing of polling data to adversaries like the Russians.

What is also important to understand is that what has been going here is emotional manipulation, that is what advertising is all about. Generations of Americans, starting with the Baby Boomers, have been programmed with emotional manipulation, which is why now, seemingly all of a sudden, “fake news” is such a thing. The Internet is an echo chamber of emotional manipulation, which is why the social network hacking has been so effective.