The fundamental pact between a political party and its supporters is that the two groups believe the same thing and pledge to work on it together. And the Democratic base feels that it has held to its side of the bargain. It elected a Democratic majority and a Democratic president. It swallowed tough compromises on the issues it cared about most. It swallowed concessions to politicians it didn't like and industry groups it loathed. But it persisted. Because these things are important. That's why those voters believe in them. That's why they're Democrats.Ezra Klein is a you'll-pardon-the-expression heterosexual and so he may be unfamiliar with the old homosexual adage: if you persist in swallowing, you'll never get off your knees.
As a bit of more pertinent advice for our intrepid young commentari'ite, I offer this: when you come to understand that the fundamental pact is not between a political party and its supporters, but between the political parties and their supporters, all dis shit makes a lot more sense.