Well, obviously he didn’t get the whole country, see 2016 popular vote count. But he did hit the right 46.1%.
I’ve talked to Trump voters, read articles like the one @Strollen posted above, read books about the subject, and listened to several podcasts with interviews with those voters. Everyone’s got their own take, obviously, but there’s one theme that stands out to me: Trump voters really believe in the “Make America Great Again” concept. They’re not happy with their current lives, and in order to fix that, they want to go back to the way things were in the mid-20th century. Trump promised that, which made the emotional connection they were looking for.
Compare that to the Democratic message, which is more about moving forward to the future, not going back. Even if you leave aside the candidate herself, the platform asked voters to continue change in a forward direction. Equality across genders/races/etc, cooperation on the world stage, focus on education, and so on…it all says “change more” rather than “go back.”
Logically, the progressive message should win. It did win, by the popular vote numbers. But that emotional appeal (combined with whatever shortcomings you’d like to assign to Hillary Clinton as a candidate) swayed just enough people in the right places to swing the electoral college.
I can agree with that, because you’re right that changing the emotional narrative isn’t easy. (Though one could argue that Trump is doing it himself by being such a train-wreck in terms of actually doing the job of President.) I still think it’s worthwhile to seek to understand rather than vilify, even if you’re not going to spend resources to sway those people. But maybe that’s just my soft liberal heart. :)
Having said that, I don’t see a real focus yet from Democrats on getting the vote out. Yes, there’s always some level of action on that front, but there certainly doesn’t seem to be any more action than previous years. Where’s the media blitz on the Sunday talk shows or whatever pushing the idea that all Americans need to get out to the polls in November? It sure seems to me that Democrats are just relying on all these “blue wave” predictions and thus doing the same things they’ve always done. They’re probably even going to win big in 2018 because people are so unhappy with the first two years of Trump, without doing the work of focusing on turnout. And it could very well bite them in 2020.