This bit noted, buried deep within a Times article on some upcoming not-announced Obama endorsements:

“There have been some conversations, I can say that,” said Senator Ben Nelson, the moderate Nebraska Democrat.

Let the liberal blogospherical tidal wave of outrage begin...

Has anyone else had enough of Bill Clinton on the campaign trail? Because this is just getting unseemly.

Isn't this the guy who's supposed to be the savviest politician of our time?

I previously thought that any non-Clinton-Democrat's problem in this race is they couldn't go after Hillary Clinton too hard, because they'd need Bill Clinton's support in the GE. Well, this really solves that problem, as it's Clinton burning bridges at this point.

Bad move, Bill.