HARRISBURG, Pennsylvania — Eugene DePasquale and Sean Parnell couldn’t be more different politically. DePasquale is a seasoned statewide-elected official and Democrat from York County, Pennsylvania, while Parnell is a western Pennsylvania Republican newcomer who has never run for office in his life. Yet they share one very important thing in common this year: Both are challenging incumbent members of Congress in Trump-won districts in Pennsylvania.

Both of their races tell the story of not just how truly uncertain the Keystone State is politically but also how completely divided it is.