Can anyone say "triangulation?"
It seems pretty clear that the only groups that could conceivably deny Clinton the nomination are anti-war groups, still angry about her vote ostensibly authorizing the President to go to war in Iraq. And by pointedly refusing to vote to condemn the MoveOn.Org ad condemning General Patreaus and supporting a timetable for withdrawal, she artfully protected her left flank (see Rasmussen poll on MoveOn ad).
Also, by releasing a health care plan that both moves toward universality, but avoids explicit government mandates, Senator Clinton has managed to propose a plan that was won widespread public support and avoids virtually all of the negative of Hillarycare of 1993 and 1994 (see Rasmussen polls on Health Care).
Her
delicate balancing act--executed deftly--stands in contrast to Senator Obama who chose not to vote at all on the resolution condemning MoveOn and Senator Edwards who could only complain that Senator Clinton had effectively lifted the core principles from his own healh care proposal.
http://www.rasmussenreports.com/public_content/politics/hillary_s_great_week