Obama Dominating Web Down the Stretch

Both candidates learning about the perils of audience-based buying

As the presidential campaign trudges into its waning hours, the embattled Mitt Romney and Barack Obama election teams are ramping up their on-the-ground efforts while still flooding local and national TV with a barrage of last ditch ads. Both campaigns are also turning to the Web with 11th-hour ads, and President Obama is by far the digital aggressor.