We've had this discussion and I've given my answer to this question many times. They could move towards him, but his approach is angry and 'my way or no way.' At least, that's how it appears. Further, he has NEVER had an interest in any party ... EVER ... he could have done this years ago, when he first got to Congress. He could have worked from within and moved things in a very different direction, but chose not to. ever. In all his years. That's why I take issue with it now, as it just seems opportunistic in order to get his way. As I've also said, I don't even take issue with some of his stances, but his manner and his approach makes me distrustful of the man. And before you send me another angry PM, think twice. I don't know why I'm not allowed to have this opinion. Others have been very liberal, but worked from within to success, and I highly respected those individuals ... Paul Wellstone comes to mind. He and Bernie were great friends, as a matter of fact, largely because their beliefs were so similar. But one's approach I thought was far more honest and genuine, the other leaves me distrustful of the man, not the issues. His approach seems less than honest. It's that distrust that leaves me with the opinion ... he's not a true leader and not one I want to support as President. However, as I've also said, should he be the nominee, I will cast my vote for him because he is still, in all that I'm uncertain of, a far better person than the one currently residing in the White House.