It also makes Kerry look like Captain Ahab in Moby Dick. If you don't know the story, the ending is not a happy one for old Ahab.
"Captain Ahab"
Very apt. A Presidency is more than just the President; it's his cabinet, staff, party and ultimately the nation. Anyone who gets so self-centered that he forgets this is apt to lose his closest backing.
One difference - that K-flopper mug cries about to be called Ichabod, not Ishmael!
The Ahab reference: He beckons! All Dems shall follow save one (Zell?).