Are you under the impression that 30% of the vote is insignificant? What if I told you that Hitler never won more than 37% of the vote in free and fair elections?
If some party got 30% of votes in Germany, stop blaming facebook and 'state actors'. Germans are better then this, they are not zombies, and they have a lot of information sources to pick up news/opinions from.
If they're voting for the Nazis again, maybe they're not better than this.