Vance and Walz’s Battle of the Network Co-Stars

If a presidential election is a TV series — and partly it is, like it or not — then the vice-presidential debate is usually a departure episode: an installment that briefly shifts focus to a couple of side characters. It might be memorable or forgettable, but it is generally skippable.

Tuesday’s debate between Senator JD Vance of Ohio and Gov. Tim Walz of Minnesota was a bit different. With only Kamala Harris having committed to an Oct. 23 debate proffered by CNN and Donald J. Trump having thus far declined, it may well have been the last big prime-time moment until election night.

It was not, however, a bombshell-packed season-ender. The change in cast produced a change in style, in a spirited but often surprisingly collegial debate whose attacks were largely aimed offstage, at the leaders of the ticket.

This was not the debate one might have expected from these candidates, each chosen in part for his media presence. Mr. Vance has been combative in TV interviews, embodying the trolling spirit of Mr. Trump’s most extremely online surrogates. Mr. Walz shot to fame on the strength of his cable news appearances and quirky viral videos, playing the down-to-earth happy warrior who mocked opponents as “weird.”

Neither performed to type on the CBS stage. Mr. Vance, who can be cutting and snide in TV interviews (and has been notorious for insults like “childless cat ladies”), answered smoothly and kept mainly cordial to his opponent. Mr. Walz, while peppering his answers with folksy touches — “My pro tip of the day is this” — spoke in a nervous rush, with fewer flashes of “Coach Walz” pep.

A decade of Trump has conditioned us to think of debates as rounds of Mortal Kombat, with dire rhetoric and imagery to match. Here, there was a lot of “I agree” and “I think this is a healthy conversation” amid the factual disputes and prepared critiques of the top of the ticket. You might briefly have forgotten this was America in the year 2024.