Because their chosen one is a failure. If you recall, the libs were actually acting like he was going to be the "messiah" for the "picked on".
If Barack had been anything else but an abject failure, POS would consider himself a dem. I guess some people don't read their own posts, and if they do, then would probably deny that it was them, and blame some Republican from Reagan's administration.
I guess it must be the perogative of libs to decide that they can be "independents" when it suits them, but anyone who is a little bit to the right of center is a die hard conservative, gay bashing, gun toting, uneducated anti America straight across the board.
Also your messiah thing..thats just what Republicans said....its a nice straw man to act like the left thought he was the Messiah...but we did not..We did think he would be a huge improvement over 8 years of Bush...and he is...just not as much as we wanted...thanks to Republicans blocking anything he tries to do..
Why? you ask?
Because some lib on the street said so, and rachel mad-cow disease backed-up their special interest specific agenda.
These are the same people who claim that dems stay true to their convictions you know...right up to the moment that it costs them something, and not someone else.