Mrs. Clinton’s strong performance Tuesday puts her even further out of Mr. Sanders’s reach. But she has to do more than defeat him for the nomination. Mr. Sanders’s success has been as the voice of Democrats resentful of a party establishment that has been too tepid in taking on issues like income inequality. She will have to somehow connect with his supporters and show them she understands them, particularly since some of them are potential Republican voters come November.

The surest path to winning over these skeptics is to stop dodging some aspects of her record. That includes speaking with greater detail and complete candor about her changes on policy positions. Releasing transcripts from those Wall Street speeches would be a great first step toward showing those who want to support her that she is willing to earn their votes through transparency. If she chooses not to do these things, skeptical voters’ doubts are likely to linger, and deepen.