Well, first of all, there's a great desire of many people to relieve themselves of the obligation to vote on principle. It's a classic rationalization that liberals have been known to use recently, but not just liberals. The Republican and Democratic parties have accomplished an amazing feat with the red state/blue state paradigm. They've convinced everyone that regardless of how bad they are, the other guy is worse. So even with 11 percent of the public supporting Congress most incumbents will be returned to Congress. They have so structured and defined the question that people no longer look at the actual principles and instead vote on this false dichotomy.
Now, belief in human rights law and civil liberties leads one to the uncomfortable conclusion that President Obama has violated his oath to uphold the Constitution. But that's not the primary question for voters. It is less about him than it is them. They have an obligation to cast their vote in a principled fashion. It is, in my opinion, no excuse to vote for someone who has violated core constitutional rights and civil liberties simply because you believe the other side is no better. You cannot pretend that your vote does not constitute at least a tacit approval of the policies of the candidate.
This is nothing new, of course for civil libertarians who have always been left behind at the altar in elections. We've always been the bridesmaid, never the bride. We're used to politicians lying to us. And President Obama lied to us. There's no way around that. He promised various things and promptly abandoned those principles.
So the argument that Romney is no better or worse does not excuse the obligation of a voter. With President Obama they have a president who went to the CIA soon after he was elected and promised CIA employees that they would not be investigated or prosecuted for torture, even though he admitted that waterboarding was torture.The fault, dear Brutus, lies not in our stars but in ourselves...
Perhaps George Carlin was, in the end, right.