How Many Politicians on the Left Have Been Involved in Some Sort of Drug and or Substance Abuse Scandal?

Question by PimpBerries’ Ghost: How many politicians on the left have been involved in some sort of drug and or substance abuse scandal?
[as versus the right]

Best answer:

Answer by February1
Probably about as many as on the Right. Scandal is equal opportunity.

Know better? Leave your own answer in the comments!