The media I read said Vance had a narrow victory. I thought it was a bit more substantial than that, but whatever.
The betting markets declared Vance the winner of the debate. On the crypto-based betting platform Polymarket, bookmakers believe Vance has a 73% chance of being judged the winner of Tuesday night’s debate in post-debate opinion polls, compared to Walz’s 27%. This is a complete inversion from before the debate, when bettors gave Walz a 70% chance of being declared the debate winner.