One key to the race in NH is a movement of women back to Hillary. In addition to the tearing-up incident yesterday, another key may have been a mailer Hillary sent out attacking Obama as soft on abortion rights because of some "present" votes he cast in Illinois, despite the fact that Planned Parenthood of Illinois officials supported his approach.
Here's a link to the mailer they sent out, calling Obama "unwilling to take a stand on choice."
Here's some background on the present votes at issue.
And here's a piece on the battle over the issue in NH.
All courtesy of the American Prospect's Tapped blog. Here's the mailer:

