Don’t really know a lot about Walz to be honest. Was thinking Shapiro made the most sense given the significance of Pennsylvania. Arizona is important too but if Dems take PA then the Republican path to victory becomes extraordinarily narrow. Maybe they feel PA is in the bag and Walz will help out more in WI/MI? Not sure. Lock down PA, MI, and WI and the election is over. Dems don’t need to win anything else.
Maybe I’m not supposed to say this out loud but I’m wondering if Shapiro being Jewish impacted the decision. I’m not sure what, if anything, he’s said on the Israel/Palestine issue but the Dems do need to placate the incredibly stupid pro-Palestine section of their base. They’re not going to vote for Trump but there is a chance they don’t vote at all out of badly misguided principle, and there larger numbers of these voters in some key states, most notably Michigan.
Ultimately, the VP pick isn’t that important. Elections have shown time and time again that people don’t vote based on VP. They probably should vote based on VP more, especially as our Presidential nominees have gotten older and older, but people vote for President, not Vice President.