President Joe Biden reportedly has a well-known favorite when it comes to the candidates to become the running mate for presumptive Democratic presidential nominee Kamala Harris. Biden told reporters Friday morning that he and Harris have talked about the pick — but he left much to the imagination. “I’ll let her work that out,” Biden replied when asked what she should look for in a running mate. Want more breaking political news? Click for the latest headlines at Raw Story. CNN reported that Biden’s top advisers believe Biden has a favorite: Pennsylvania Gov. Josh Shapiro. Biden is a “big fan”…