Today's column is agnostic as to whom the Democrats will nominate. For purposes of the general-election prediction, it doesn't matter.
Of the 13 factors the systems considers, seven now favor the Democrats. Only six are needed for it to win.
Meanwhile, the economy has been growing at about 2.7 percent a year during this term, as opposed to 3.2 percent during the previous eight years. That's three keys.
He has not had any major foreign policy success. But there's the major failure: Iraq.