Kamala Harris’ media whirlwind of the past few days may not move the needle much in the tight race against Donald Trump.

Still, in all of the VP’s sit-downs this past week, a very Bill Clinton moment from last’s night Univision town hall might prove the most memorable in capturing voters’ attention.

“She connected, she humanized herself with the way she listened more and spoke less with that poor woman,” a top Hollywood publicist says of Harris’ interaction with a sobbing Ivett Castillo, who told Harris and viewers of the Enrique Acevedo-moderated primetime event of the death of her undocumented mother six weeks ago and the shadows that “subgroup of immigrants” live in.

“The viral moment, when the vice president went over to her after the town hall was over, that’s more important that anything else, anything that was said last night,” the publicist said.

Harris...