Karl Rove - for trainwrecking the best the Repubs had in the 90's with moving away from limited government, stealing Liberal ideas and ending up pushing the entire political spectrum leftwards.
Al Franken - He's intolerant, he just embodies the worst I've seen in the left with not only disagreeing with people but doing it as stubbornly and stupidly as he can with zero interest in listening to anything they have to say.
That's probably it for hate, I don't have a lot of it, most Liberals are what they are and being deluded to any degree is not a reason to hate.