The Ad Wars: GOP advantage in the House

As Americans cast their votes for the next president, the Obama campaign and its supporters have maintained an unexpected advantage in the ad wars -- defying predictions that the Democrat would be drowned out by a flood of cash from deep-pocketed conservative groups (at least before a spending splurge by outside groups this past weekend). But outside groups have propelled Republicans to a strong advantage in another set of races: the battle for the US House of Representatives. Republican candidates have run more ads than their Democratic opponents in 104 contested races, while Democrats hold the edge in 77, according to spot counts by Kantar Media’s CMAG. And the Republican edge in the House is driven primarily by outside groups such as super PACs and nonprofits.