It lacked the vulgarities and, most likely, the ratings of the Republican debate on Thursday. But the Democratic face-off in Flint, Mich., on Sunday provided revealing moments and insights into the candidates and their campaigns. Two days before the Michigan primary, there were displays of impatience, passion, policy knowledge and, perhaps, fatigue.

Here are some takeaways from the debate:

Neither Clinton Nor Sanders Is Comfortable Talking About Race in a Debate

Asked a provocative and difficult question — what racial blind spots do you have? — Hillary Clinton dodged with all the elegance of a supertanker, instead answering a previous question before being pushed again by a moderator.

Senator Bernie Sanders of Vermont detoured “briefly” to a not-at-all-brief story about being with a black lawmaker who could not catch a cab, and then he explained awkwardly that “when you’re white, you don’t know what it’s like to be living in a ghetto.” While each candidate spoke with conviction about the need to tackle incarceration rates and economic opportunity for African-Americans, both seemed to be walking on eggshells.

It’s Not Over

Dispense with the idea that Mrs. Clinton will try to patiently outlast Mr. Sanders while she piles up enough delegates to wrap up the nomination. This debate showcased both candidates leveling their strongest attacks at each other.