This is very much a text book with all of the boringness that that entails. Many of my students felt like the events of the 2016 election made this book obsolete, but I feel like only one or two chapters on technology and incivility/bias need major updates.
The authors do a good job covering things, but it is from a very "communications degree" perspective, which would occasionally irk me. TV always has a dumbing-down, brainwashing effect for the authors. Anything on TV that isn't hard-core news is "fluffy" and a distraction from what we should be really caring about, which is a vigorous understanding of the political issues of the day. Yuck.
Turns out life is more than that. Culture matters, even "fluffy" TV shows. Well, that's the way I feel. I'd like to see a text book on this topic made through the collaboration of a communications scholar and a humanities scholar. But until then, I'd use this text again if I got the chance to teach a course on this topic again.