Even if you are not aware of it explicitly, American politics always has a main character. After a presidential election, for example, the new president is the main character. If the president chooses a major accomplishment to pursue, it can become a main character of its own, like the Affordable Care Act. After midterm elections, the opposition party, and its leaders and priorities, become main characters, like Newt Gingrich in 1994 or the potential impeachment of Donald Trump in 2018. Presidential primaries change main characters on a weekly basis in a way that can be thrilling if you’re into that...