How come Rove, Dick Morris & even Barone were fooled?

The supposedly smart guys on the republican side got the elections wrong?  were they drinking the kool-aid from Romney campaign? also, all the polls had Dems +11 or +8 advantagelikely voters from 2008 & most people thought the pollsters were screwing with the numbers to favor Obama campaign.   I still do not understand how all these people could be wrong?