Health care dominated the two Democratic presidential debates last week. Among the most dramatic moments was when moderator Lester Holt asked the candidates to raise their hands if they supported outlawing private insurance and forcing everyone onto a new government-run, “Medicare-for-all” plan.

During each debate, only two candidates — Sen. Elizabeth Warren and Mayor Bill de Blasio on night one, and Sens. Bernie Sanders and Kamala Harris on night two — said they would. Hours later, Harris claimed she didn’t understand the question and walked back her support.