The race to be Kamala Harris’ running mate has already started. Moments after President Joe Biden dropped out of the presidential contest and endorsed his vice president on Sunday, speculation began swirling over who would be Kamala Harris’ running mate. Some Democrats started floating their preferred picks. Pennsylvania Gov. Josh Shapiro, for instance, “would be an excellent choice” to share the ticket, said Philadelphia Democratic Party chair and former Rep. Bob Brady. Govs. Andy...