A new CBS News/New York Times poll shows strong leads for Barack Obama among those who have already voted and those likely to vote on Tuesday:

(CBS) With just three days left until Election Day, a new CBS News poll finds that the Democratic presidential ticket of Barack Obama and Joe Biden leads its Republican counterpart by 13 points among likely voters, 54 percent to 41 percent. That margin reflects an increase of two points in the Obama-Biden ticket’s lead from a CBS News/New York Times poll released Thursday. About one in five voters say they have already cast their vote, either in person or through the mail, and these early voters prefer the Democratic ticket by an even greater margin. Obama leads among early voters 57 percent to 38 percent, a nineteen point advantage.

Double digit leads three days before Election Day.

Either Obama and the Democrats are headed for a blowout of historic proportions, or everything we know about polling is wrong.

I go with the first option.