Will the argument between Kamala Harris and Donald Trump matter?

.NO PRESIDENTIAL dispute has had as a lot influence on a vote-casting as that in between Joe Biden and Donald Trump on June 27th. Mr Biden’s performance was thus disastrous that his own celebration pressed him to quit. Because Kamala Harris, the vice-president, substituted him as the Democrats’ candidate the ethnicity has secured.

It is right now a toss-up, depending on to The Economist’s design. On September 10th Microsoft Harris will certainly experience Mr Trump in a 2nd presidential debate. Just how much difference will this set make?