A new poll in Pennsylvania suggests just what some Democrats have seen as the nightmare end to a drawn-out Obama vs Clinton battle. The Franklin and Marshall University poll finds about 20% of Clinton and Obama supporters in Pennsylvania say they would vote for John McCain if their candidate doesn’t win the Democratic nomination.

See a CNSNews.com story on the poll here — 03/21/2008

In some ways, it’s not surprising — as Obama and Clinton go after each other, they draw the ire of their opponents’ partisans. The question will be, can they repair the breach, or will the GOP be able to use McCain to attract and hold moderates, and find a V.P. candidate who appeals to conservatives without scaring the middle-of-the-road away.  A lot is still up in the air.

The poll has Clinton up 16 in the Penn. primary, by the way.