Vice President Kamala Harris has tapped Minnesota Gov. Tim Walz as her running mate after it appeared the choice came down between him and Pennsylvania Gov. Josh Shapiro. Republican political consultant Mike Murphy) recently offered some insight into why the scale tipped in Walz’s favor over Shapiro despite the latter bringing something big to the ticket: Pennsylvania is a key swing state — possibly the lynchpin to a Democratic victory — and Shapiro, who is wildly popular, would’ve helped capture it. “I think [Shapiro] would be a solid choice, and probably somebody ought to tell him, we have t…