Take Me To Post Comment Form Hillary Clinton's campaign chairman Terry McAuliffe said Thursday he believes the Democrats will have a presidential nominee by June and that if Clinton does not prevail, she will campaign for rival Barack Obama.

"It'll be over early June," McAuliffe said. "We've all said we'll be together at the end. If Hillary doesn't win, Hillary, (former) President (Bill) Clinton, myself, we'll be over there helping Senator Obama," McAuliffe said during an interview on NBC's "Today" show. "And, likewise, Senator Obama will come together to help Hillary if she's the nominee."

Mathematically, it is unlikely Clinton will win the nomination, but so far she has rebuffed calls to withdraw from the race by some prominent Democrats who worry a continuation of the intensely fought contest could lead to a fractured convention and possibly a loss in November.

After Tuesday's primary in West Virginia, which Clinton is expected to win, the remaining contests are Kentucky and Oregon on May 20, Puerto Rico on June 1 and Montana and South Dakota on June 3.