She's at it again, but it's difficult to see how it benefits her this time around. Her tears are either a calculated reconstruction of her "reverse Muskie moment" in New Hampshire, which will turn voters off, or they represent another display of emotion that will have people whispering about whether she's up to the job of president if the pressure of the primary campaign has seen her shedding tears twice in three and a half weeks.

Furthermore, it's a bit of a contradiction for Clinton to be constantly misting up and getting verklempt while simultaneously deploying the argument that she's tougher than Barack Obama and can handle whatever the Republicans come at her with in the general election.

Meanwhile, Obama seems to be holding up just fine, thank you very much. And not just because the winds are blowing his direction at the moment. This summer when the polls had him 20 points down and the folks around him began to panic, Obama stayed incredibly cool. After a shocking, even disappointing loss in New Hampshire followed by a hard fought defeat in Nevada, Obama kept his emotions in check, a feat made even more remarkable given that he was under daily attack by the former President as well.

If primary campaigns tell us anything at all, they give us a sense of the temperament of individuals and how they respond to adversity, which might be the most important thing the public needs to know when choosing a president. On that score, at least so far, Obama is acquitting himself much better than Hillary. While she flits back and forth between tears, cackles, and angry attacks, the freshman Senator from Illinois has shown a remarkably even keel.