Fueled By Outside Money, Ad Blitz Hasn't Stopped For Weary Iowans

One of the big story lines in this year's presidential election is the unprecedented role of outside money. Millions are being raised and spent by groups that back one candidate or another. Those groups are buying advertisements, often to launch attacks on the candidates they don't like. It's an area where pro-Republican ads have overwhelmingly outnumbered those backing Democrats. One place these ads are hard to miss is in Iowa. It's not even summer yet, and the dust from the primaries has barely settled. But in battleground states, things seem especially intense already this election season.