There has naturally been a lot of research on the effectiveness of political advertising. From what I've read in the academic literature, it's recognized that n

There has naturally been a lot of research on the effectiveness of political advertising. From what I've read in the academic literature, it's recognized that no one's opinion gets changed, but exposure to a narrative will change the relative priority people give to issues. The purpose of political advertising is to focus public attention on issues were the party thinks they have stronger appeal. I'm speculating that political ads trend rather childish because they are targeted at those people who are most easily influenced.