Mark it. I think today’s column by Eugene Robinson is the first suggestion from a major left-of-center columnist that Hillary Clinton should drop out for the good of the party.

John Nichols of the Nation made an interesting remark during our radio appearance this morning – he was in Wisconsin, and he noted that in 2006 and 2007, as Hillary was running as the inevitable candidate, a lot of Democrats at many levels signed on because… well, she was inevitable. And they came with their own agendas. Some wanted jobs in her administration, some wanted to ensure they had an in with the new president, etc.

Obama’s supporters and staffers signed on because they believed. The chances of a benefit or cushy appointment from President Obama seemed pretty long odds, so they were motivated by something different – actual agreement on the issues or stirred by his rhetoric or whatever.

You have to wonder how many Hillary backers, staffers, and endorsers are quietly thinking to themselves, “dang, I backed the wrong horse, how do I get out of this?”