"Rather than candidates, Todd Makse, a political science professor at Florida International University who’s co-authored a book on campaign yard signs due for publication this spring, focuses on people who display signs and their motives. 'Mostly, it’s about people expressing themselves – I think that’s one of our big takeaways,' Makse says. 'Signs become this kind of identity marking, both in terms of displaying how people feel and how they see other people. Instead of the guy with the yappy dog, it’s the guy who likes Trump. It’s a label.' 

https://illinoistimes.com/article-20979-sign-sign-everywhere-a-sign.html