An era has come to an end at Fox News. The departure, last year, of Roger Ailes, its founder and CEO for two decades, and the departure, this year, of Bill O’Reilly, its biggest star for two decades, means that Fox will be changing. What’s said of politics is also true of TV: Personnel is policy. Tell me the names of those who are making the decisions about programming, and the names of those who are actually doing the shows, and I’ll tell you, in turn, about the network. But first, let’s take a closer look at the country—at least its presidential voting patterns—pre-Fox and post-Fox.