After this interesting exchange at last night's debate (around 2:21), many are starting to wonder if Hillary is preparing to concede the nomination. This insightful New York Times article points to several signs that this moment may have signaled the beginning of the end for camp Clinton.

Plus, the common wisdom suggests that any kind of Michigan/Florida credentials fight would be disastrous for Clinton and the party, and a superdelegate victory might be just as harmful. Other events could conspire to nudge Hillary out of the race as well–a shrinking war chest, an Edwards endorsement of Obama, or another Bill snafu, for example. Add that all up and it looks like bad news Bears all around for Hillary. 

So that raises the question: When will Hillary drop out and concede?

I'm curious to see how everyone thinks this will all play out now that we're definitely in the end-game of the nominating season. What's her exit strategy? Should we even be counting her out at this point?