If you want to know why Kamala Harris is leading in the presidential race it's because Americans like her. They really, really like her. Source: Fortune Vice President Kamala Harris is leading Donald Trump in two national polls of registered voters released Sunday, underscoring her momentum as the US presidential candidates grapple for a boost with early voting underway in several states. Harris’ overall favorability has gained 16 percentage points in NBC’s polling compared to before she entered the presidential race in July.