How Did "Tampon Tim" Happen?

Somewhere between 24 and 48 hours after Kamala announced she'd selected Minnesota Gov Tim Walz as her running mate, it looks like any possible advantage he might have brought to the ticket evaporated. Even that paragon of obtuseness Sean Trende scratched his head at Real Clear Politics : There are basically three good reasons to make a vice-presidential selection. The first is to help deliver a key state in which the vice-presidential candidate resides. The second is to help counteract a narrative developing about the candidate. The third is to calm a restive base. . . . Vance did none of these things. The same is true of Walz. Wait a moment. This is what they teach you in middle school civics class, and Trende thinks he's some sort of big-deal pundit? He goes on for another 750 words or so about how Kelly or Shapiro would have been better choices and concludes, Regardless, I don’t think Walz probably leaves Harris all that much worse off. He’s more of a missed oppo...