Why Is Obama Going Back to Delaware?

Christine O'Donnell has been trashed by the media. Trashed by the elites (Republicans and Democrats alike). She has received the full Palin treatment. She was supposed to get blown out in a laugher.

Now Obama is rushing back to Delaware the final weekend before the election to campaign. Hmm.

For the record, I don't think O'Donnell will win, but is there no better use of a President's time than to campaign in a state that was a lock to win?