Remember how I said that many voters didn't know JD Vance? Well that's quickly changed now that he's the vice presidential pick.
Here's YouGov polling on Vance before and after he was selected.
He was underwater to start, which is not a great position for a vice president who should at least add to a ticket.
His net favorability has declined to -8 points. Driven by large declines among Democrats and independents.