PHILADELPHIA — Wealthy investors and executives supporting Republican Senate candidate David McCormick have helped flood Pennsylvania’s airwaves with ads accusing GOP rival Mehmet Oz of being too liberal, a RINO — Republican In Name Only. But some of those same donors have also supported some of the most liberal Democrats in Congress, and Hillary Clinton’s 2016 presidential campaign. One of them worked in Bill Clinton’s White House. He and several others who have either donated primarily to Democrats or to members of both parties are among the early funders backing the pro-McCormick super PAC …
