I was thinking Pete as Harris VP early on but now I'm not so sure. He's personable and intelligent, but I think his lack of experience is a big negative. I think "governor" carries a bit more weight than mayor of south bend- and Bullock in particular as governor of Montana can swing a pretty big stick in red areas.
What we learned in '16 is that we need to be able to send someone into these deep red or mostly red counties of swing states (PA/OH/MI/NC) where we won't win- but where we can ensure by showing up that we lose by a hell of a lot less.
For instance, looking at my state (PA) Hillary made plenty of stops here between June and November- but they were all packed into the same friendly areas:
https://lancasteronline.com/news/lo...cle_17eda882-a367-11e6-8367-fb4571a4487f.html
Pittsburgh 4 times
Johnstown
Harrisburg 2 times
Haverford
Philadelphia 8 times
Hatfield
Scranton
Kaine wasn't much better (note that I don't think Kaine excited ANYBODY, that was a bad VP pick)
Pittsburgh 2 times
Johnstown
Lancaster
State College
Philadelphia 2 times
Allentown
Bethlehem
Newtown
Erie
this is...pretty bad. Considering the margins by which PA was lost (44k votes), straight up abandoning large swaths of the state to Trump and Pence absolutely contributed to the loss, and is DEFINITELY responsible for Pat fucking Toomey still sitting in that Senate Seat.
Allentown is the third largest city in the state. Hillary never went there. Kaine went once.
Erie is the fourth largest city in the state. Hillary never went there. Kaine went once.
Reading is the fifth largest city in the state. Neither Kaine nor Hillary appeared there.
Gettysburg, Mechanicsburg, York, Hershey, Aston, Wilkes-Barre- all of these places got hit by Trump and Pence, but not the Clinton/Kaine campaign. Ed Rendell specifically told Hillary you simply can't do this with PA- but the campaign settled on a strategy of driving up turnout in Philadelphia and Pittsburgh to the exclusion of all else.
If the nominee isn't great at getting out to red areas (and let's admit it, the rust belt isn't minority friendly at all) you'll need to have someone that they will respond to. I think Obama got this, which is the only reason to pick biden as VP- he brings nothing else to the table.