Debate that remade the race

On the evening of 10 September, Kamala Harris and Donald Trump met for the first time, in Philadelphia, before an audience the moderators of the ABC debate were instructed not to show, and the ninety minutes that followed became, by the consensus of the commentators and the early polls, the most consequential evening of the autumn campaign. The debate had been expected to be a test of Harris, who had never faced the former president in a room, and it became instead a demonstration of the contest she had built her campaign around: the prosecutor against the defendant, the present against the past, and the night ended with Trump, by the standard of the exchanges, repeatedly thrown off the rhythm that had carried him through every debate since 2016.

The performance that made the difference was Harris’s, and it was a study in the tactics of control. She opened the abortion section by refusing the debate’s framing and spoke directly to the camera about the women of the country; she baited Trump on the size of his rally crowds, a subject on which he cannot resist responding, and let him spend minutes on a grievance while the clock drained; she stood close to his lectern, hands in her pockets, and smiled at the moments when he grew loudest, which flustered him. She used the format’s rules to keep him on the defensive, and he used his minutes to re-litigate the 2020 election, to claim that immigrants in Ohio were eating pets, a claim the moderators fact-checked aloud and he refused to retreat from, and to describe his legal troubles as a political vendetta.

The fact-checking, delivered in real time and aimed overwhelmingly at one of the two candidates, became a story of its own, and it cut both ways: the corrections were accurate, and their asymmetry, which Trump’s supporters read as proof of a rigged system, may have hardened his base as much as it informed the undecided. The debate’s effect on the race will not be visible in the national polls for weeks, and the seven battlegrounds were not settled by a hundred minutes of television. What changed was the frame: the race, which had been presented for months as a choice between a known quantity and an unknown, is now presented as a choice between two known quantities, and the unknown, after Philadelphia, has the advantage of having looked like the larger of the two.

The night had its moments of the ordinary and the strange. Harris invoked her mother and her working-class childhood; Trump invoked the ‘greatest economy in history’ and the border. The only new fact to emerge from the debate, beyond the impression, was the endorsement: Taylor Swift, posting in the early hours to a following of nearly three hundred million, urged her fans to register and declared her support for Harris, and the endorsement, whichever way it cuts demographically, guaranteed that the debate would be discussed, for days, by an audience far larger than the one that watched it live.

The debate was not the turning point of the campaign, and anyone who declares it so within a week is guessing. It was, more precisely, the first full test of the reshaped race, and it was passed by the candidate who had the most to prove, and failed, by the same measure, by the candidate who had the most to lose. The autumn that follows will test whether the impressions of one evening survive the machinery of the campaign: the advertisements, the rallies, the early votes already being cast, the two months in which everything can change and, in a country this divided, almost nothing does.