Hugh Hewitt, a strong Romney backer, sees the writing on the wall and offers good advice:

Senator McCain has a clear path to the nomination, Romney a very uphill battle, and Huck is fighting for 2012 at this point and for a win in a major vote outside of the south.  Certainly they should all stay in through the primaries ahead because it isn’t over and because our side needs the excitement of a campaign in such key falls states as Wisconsin, Ohio and Pennsylvania to keep the MSM from turning 100% of its attention on to growing the Obama phenomenon.  They ought to be scheduling three man debates in every state, making their points and taking every opportunity to look ahead to the fall.

At the same time, Romney and Huckabee ought to begin to note Senator McCain’s lead and urge their followers to recognize that if they cannot come back they and their followers will have to come in and join the party’s eventual nominee.  Senator McCain would do well to make a similar statement though his lead is significant and his collapse unlikely.  Putting Humpty Dumpty together again cannot wait for St. Paul.  Each of the three need to strike some common chords again and again, beginning with why the GOP needs to retain the White House, regardless of who its nominee is.

There are seven reasons for anyone to support the eventual nominee no matter who it is:  The war and six Supreme Court justices over the age of 68.