Is there any evidence Obama campaign made people install apps in the pretext of a poll and harvested FB data? Don't confuse using "FB advertising platform" wit

Is there any evidence Obama campaign made people install apps in the pretext of a poll and harvested FB data? Don't confuse using "FB advertising platform" with "stealing FB data outside of their terms and selling it" If CA was not involved and Trump campaign merely used FB advertising, we wouldn't be arguing about this particular point. Still bad on FB, but that is a different matter.