Mott the Hoople
Sweet Jane
Kaine will have about as much impact as Pence. That is to say next to none. There has only been one VP candidate selection in my life time that had a significant impact on a Presidential election. Sarah Palin. Selecting her as a VP candidate hurt McCain chances as she was viewed widely as not being qualified to be President.Those polls barely have any data from the time Kaine was chosen, give that a week to show up, then give the affect of the Convention a week to show up.
It might be bad for HRC, but its too early to say for sure, or to say anything about the effect Kaine had on the race.
The old cliché that selecting a VP candidate can do more harm than good appears to be the case.