The tight timeline will magnify any missteps Ms. Harris might make but also minimize the chances for a stumble. And in a race that Mr. Trump had been on a trajectory to win, Ms. Harris immediately becomes the ultimate X-factor. She was making the argument for herself but the logic applies to Ms. Harris, too. Her day job is not nearly as demanding as Mr. Biden’s, and she can barnstorm the country at a pace far faster than Mr. Trump has undertaken. And while Ms. Harris did not carve out a reputation in California as an outspoken progressive — her tagline as D.A.

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Persons: Kamala Harris, Donald J, Biden’s, Harris, Trump, Biden, Nikki Haley, Mr, ” Erin Wilson, Harris’s, She’s, Trump’s, Dave Sanders, —, Scranton Joe, ’ Harris, Yuri Gripas, Hillary Clinton, Erin Schaff, Reid J, Epstein Organizations: Democratic, Trump, Democratic Party, Republican, Trump Republicans, Democrats, The New York Times, Committee, Mr, New York, The Trump, Biden, Black, ABC, Fox News, Republicans, Air Force, Senate Locations: Europe, Manhattan, New, California, San Francisco, Milwaukee