Non Swing Voter comes to mind.
Strong disagreement =/= worst poster.
It isn't so much about how them disagreeing with people, its how they completely lack the ability to construct arguments, do not take criticism well whatsoever, and think that they can dismiss other folks evidence by calling them trolls.
Yes, he legitimately contributes nothing, hashes out dumb and historically untrue arguments, and does not seem to have his head stuck in reality world. I don't put, some libertarians who I very much disagree with here, though I could since they're piss annoying but they don't deserve to be on such a list.