In the final sprint to the election, Kamala Harris’ campaign — at her insistence, aides and allies said — started playing Donald Trump’s most incendiary comments on the jumbotrons at her rallies, displaying in technicolor his meandering, racist and, sometimes, violent rhetoric.

At the end of a presidential campaign in which Pennsylvania was transformed into a 45,000-square-mile political arena, Vice President Kamala Harris made a final appeal Monday at the steps of the Philadelphia Museum of Art for the state’s coveted 19 electoral votes.