You've actually nailed the bitter truth about it which I also mention part. When you see a bad side of a politician been painted on social media, it was not done to really reveal him as a bad candidate but so that he could be out of their way especially if he's a strong one in the line of contesting.
Politics is dirty but then we won't still leave it alone to remained controlled by the dirty. It becomes dirtier so until it's fairly clean, we can't give up