It strikes me that at least four of the items on Mark Halperin's list of 10 things Hillary Clinton can do to turn around her campaign would be divisive and further detrimental to Democratic party unity:

3. Push her women-rallying fight with NBC News.

5. Keep making the case that caucuses are less democratic and more disenfranchising than primaries.

6. (Quietly) point out Obama's reliance on African-American votes in some February victories.

7. Stoke the Florida and Michigan delegate fights.

The shorter, cruder version of Halperin's to do list: play the gender card, play the disenfranchisement card, play the race card, and try to change the rules in hopes of snatching back a nomination she's in the process of losing.

But hasn't she already done all of these things to a certain degree? And here we sit, in the middle of February, and Clinton is facing a challenger who is growing in strength while she is hunkered down, suffering through a terrible stretch and thinking March 4th can't come soon enough.

Part of the reason Clinton is under such pressure now is because there is a growing disdain for exactly the kind of tactics Halperin recommends. To the Clintons this is just business as usual: it's how the rough and tumble game of politics is played. But they've been shocked, and put on the defensive, because Democrats are increasingly troubled by the way the game looks when it's played inside their own party against a candidate like Obama.