The Kaine pick was a regional play by Hillary to win Virginia and NC. Kaine was a popular guy, but on the national stage seemed dull and lightweight. Trump also went with a regional play, tapping IND Pence since Trump knew his only path was to pick off some midwestern states.
Hillary needed a male who wouldn't look too dominant, and Trump needed an establishment guy to reassure the GOP establishment.
Who do folks think Biden would tap for Veep?
I think he needs to pick a Midwesterner.
Amy, Sherrod Brown, Mayor Pete, someone else.
I like the notion of picking someone who has campaigned nationally and is up to that task.
Pete would be a young counterpart. A woman such as Amy K would be a good addition for Biden. Brown is from OH a key battleground, but he hasn't much of a national profile, and I don't really know his style. I doubt Biden would go with Warren or she'd want that (though maybe since Joe might just be a one term guy who ages out of the job). Uniting the moderates and progressives with Warren makes political sense, but I don't think they are comfortable with each other. Lotta possibilities for Uncle Joe, but I think a midwesterner is crucial.