Still, I think Democrats made a mistake clearing the field in 2016. I even think Clinton’s campaign made a mistake clearing the field in 2016. Coronation isn’t a good look for anyone, and voters don’t like the feeling that someone is trying to make their choice for them. My guess is Clinton would’ve still won in a larger field, but the win would have felt more earned, more legitimate. And if she lost — if, unlike Sanders, Biden had decided the American people had not yet heard enough about the damn emails, and had run hard on them, and had taken Clinton down — Democrats might have been saved a debacle.

The reason it’s unwise for the party to try to decide as firmly and as early as Democrats did in 2016 is the party doesn’t have very good information that far before a general election. Candidates who look strong prove weak. Voters who seem satisfied prove restive. Competitive primaries surface unexpected information. If we’ve learned nothing else, it’s that political elites shouldn’t be so arrogant as to assume they can predict future elections.

The 2016 Democratic primary wasn’t rigged by the DNC, and it certainly wasn’t rigged against Sanders. But Democratic elites did try to make Clinton’s nomination as inevitable, as preordained, as possible. And the party is still managing the resentment that engendered in voters. “Once somebody doesn’t trust you,” sighs Buckley, the New Hampshire Democratic chair, “it’s very hard to get that trust back.”