From an interesting NY Times piece by Tom Edsall about what happens to the American political parties after the election, I extract this:
The one truism of public opinion is that it acts thermostatically. When the government becomes more left-wing, public opinion shifts to the right (and vice versa). This is true both in aggregate, and within parties as well.Under Trump, the American public has become more liberal. Which is very interesting, especially when you consider all those narratives about "Presidential leadership" and what have you, and is one of the few good signs I have seen lately for our political future.