Lumpy, I feel bad for you. You asked an honest, valid question, fairly, with no name calling or mean spirited remarks. And it's a very good, valid question. But you were only given the typical liberal drool of an answer from the left wingers on here. Thats what you get for trying to have an honest debate with left wingers who suffer from the mental disorder of liberalism.
SO......I'll answer the question on their behalf for you.
They still support him because they have so much invested emotionally in him and the left wing cause. See, the modern progressive doesn't place much faith in the things that we Americans traditionally did: God, the nuclear family, patriotism, honest work, etc.
They place faith in left wing "causes". Thats why they wanted God out of schools, and the traditional family model to come apart. Because as tribal animals, we humans need a cause to be passionate about. The causes the left wing gripped to became global warming, social justice, and a whole host of feel good liberal causes.
Obama and the left wing represent all those things. A black president and massive welfare and healthcare for social justice. A huge wealth redistribution scheme disguised as global warming. They watched and bowed to Al Gore's movie. They preached to us the ills of our American ways.
Now, the left wing utopia is crumbling. First in Greece and Europe. Well, really, first in East Germany and the USSR, but then on to Greece, Europe, and coming soon the collapse of California, Illinois, NY, NJ. But no fear, the other 45 states will bail out the 5 far left bankrupt ones.
But anyhow, much like a hurt, scorned girlfriend who found out her boyfriend has been cheating and lying to her, the progressives are in shock and denial. They have so much emotion and self-worth tied into the left wing cause, that the thought of that falling apart leaves them with nothing but personal and emotional isolation.
So there you go. Where many of us find faith, belief, comfort and loyalty to our religion and family, the left wingers often find that in social justice and environmentalism. Imagine your family and church falling apart. It would be a very long time before allegiance to either would go away. Same for a progressive with far left politicians and their policies.