Via Emptywheel:

1 thing that APPEARS to have happened is GOP spent so much time attacking #Walz, w/stolen valor etc (possibly bc they had ready, albeit shoddy GOP oppo on him but not on Kamala), they evened Walz' superb favorables but left VP space to improve hers.

Josh Marshall:

On July 2nd, days after Biden's last debate, #Harris had a net neg favorability of 17.6 pts (538 avg). Today is at .1 pt net neg favorability, unheard of turnaround. #Trump is -9.6; Vance -10.7; Walz +5; Harris -.1