.NO PRESIDENTIAL discussion has had as a lot impact on a political election as that between Joe Biden and Donald Trump on June 27th. Mr Biden's functionality was thus disastrous that his personal party pressed him to drop out. Since Kamala Harris, the vice-president, replaced him as the Democrats' nominee the race has tightened up. It is right now a toss-up, according to The Economist's version. On September 10th Ms Harris will face Mr Trump in a 2nd governmental dispute. The amount of variation will this set make?