Facebook won't need to resort to such crude methods. They can algorithmically suppress positive stories about a candidate, boost negative stories, and do the op

Facebook won't need to resort to such crude methods. They can algorithmically suppress positive stories about a candidate, boost negative stories, and do the opposite for his opponent. Without a leak from Facebook, you wouldn't even know they did anything at all, let alone be able to prove it. Story choice in traditional news media has a similar bias.