Obama's lead economics advisors Jason Furman and Austan Goolsbee employ Delong in their Wall Street Journal Op-Ed today:

Sen. McCain has put forward the most fiscally reckless presidential platform in modern memory. The likely results of his Bush-plus policies are clear. As Berkeley economist Brad Delong has estimated, the McCain plan, as compared to the Obama plan, would lower annual incomes by $300 billion or more in real terms by 2017, costing the typical worker $1,800 or more due to the effect of large deficits on national savings and thus capital formation. Sen. McCain's neglect of critical public investments would further impede economic growth for decades to come.