There's that one poll that claims it can control for "shy trumpers". It puts the election closer than any other poll.OMG. And I don't suppose they managed to filter out the botnets supporting Donald for their result
We Analyzed Every Twitter Account Following Donald Trump: 61% Are Bots, Spam, Inactive, or Propaganda | SparkToro
I don't expect that figure is much different today. And that's just one possible issue with their system.