Democrats, in substituting a lucid 59-year-old for a fading 81-year-old, also replaced a career pragmatist with a lifelong left-wing ideologue.

Vice President Kamala Harris, now that she is the Democrats’ presumptive nominee, should be forced to answer for her decades of extremist positions on foreign policy, race, abortion, and the environment, among others. Does she still hold these views? If not, what changed her mind?