A dark chapter in the family history of Minnesota Democratic Senate candidate Peggy Flanagan has made its way into the race, but it is unclear whether voters will hold the alleged sins of her long-dead grandfather against her. Earlier this week, Alpha News revealed the troubled mental health history of Flanagan's grandfather, John Jacob Hartmann, supported by old newspaper accounts and court records. He spent decades in psychiatric custody, escaped twice and was suspected in multiple killings, though never charged. The reporting comes just weeks before the midterm elections, in which Flanagan, the state's lieutenant governor, faces former television sports...