However these ads have remarkably little impact, especially when candidates like Donald Trump and Hillary Clinton already are known quantities to most people. Political scientist Lynn Vavreck lays out what researchers have learned:... if you’re running for office, you tend to do what your consultants tell you to do. And consultants like TV. It’s safe. In many cases, it’s what they’ve always done. And then there’s the money.
“Consultants – they have an incentive to sell TV to their candidates,” said Adam Sheingate, who teaches political science at Johns Hopkins University.
Sheingate decided to look into why we’re still seeing so many campaign ads on TV. His conclusion: “It’s the most lucrative part of the business from the consultants’ perspective. It provides the greatest opportunity to make money.”
Here’s how it works, according to Sheingate. A political candidate hires a consultant. The consultant says, let’s blanket the airwaves. The candidate says, OK. The consultant places the ads with TV stations, and takes a commission – 10 to 15 percent of the cost of the ad. That adds up.
But she then goes on to argue that candidates can't skip the air wars because ... well because the minuscule effects that have been documented might add up by November. Well maybe ...A study estimated that most of the impact of an ad in a presidential election is gone within a day or two of its airing (I am one of the authors of this paper). In governor, congressional and Senate elections, the effects last a bit longer: three or four days. Fleeting effects on campaigns have been shown by various authors in the lab; in Canada; in the 2000 and 2004 general elections; in the 2006 midterm elections; in the 2012 general election; and in field experiments in a Texas governor’s primary in 2006 and a general election in 2014.
But is TV genuinely essential in big races? Vavreck points out that Trump actually was the subject of a lot of positive TV ads during the primary. But right now, he seems to be broke. Maybe he'll create the experiment that proves the TV is just waste in a presidential cycle with well known candidates.
Meanwhile, Hillary Clinton is blanketing the battleground states in the conventional manner.
That's a real world test of the conventional wisdom if I ever saw one. Trump must be defeated. But if his campaign revealed that a candidate can bring out his base without the airwaves, citizens spared endless repetitions of nonsense would be grateful. Not that I can imagine that consultants would ever admit this.Every single 2016 presidential TV ad currently airing in a battleground state is either from Hillary Clinton's campaign or the Democratic outside groups supporting her.
The opposition, by contrast, hasn't spent a dime in these same battlegrounds - whether it's Donald Trump's campaign or Republican-leaning Super PACs
Ads about candidates and on subjects about which voters know little may be both informative and effective; but much candidate spending is consultant-theft from gullible clients.







































