Harris dominated Trump in debate, but will it matter in a race this close?

Ever since President Joe Biden ended his reelection campaign, former president Donald Trump has been sour and on the defensive. His new opponent, Vice President Kamala Harris, made clear in their scorching debate here Tuesday night that she will spend the next two months trying to keep him there. If debates matter, this one should. But the overriding question in such a divided country is whether it will.