Reminds me of the media who decry the amount spent on campaigns...but local TV/radio are raking in $$$ with every repetitive ad. Of course the media will claim that advertising, specifically negative advertising, will work - they’re filling the hours with it!
In addition to the spell being broken re: campaign consultants, the article of faith that says flooding the airwaves will shift electoral outcomes was disproven on a grand scale in 2016.
The next domino to fall should the concept of Polls. They aren’t real. It’s just manipulation of gullible people. Polling is a form of advertising.