Looking at historical precedents for this unprecedented election

This presidential election, no matter who wins, will be historic. Either Americans will elect the nation’s first African-American leader or the first female vice president. We also know that what’s past is prologue. For a look at how former presidencies have shaped this unprecedented race, The Takeaway turns to award-winning filmmaker David Grubin. Grubin has produced a number of presidential biographies for PBS’ American Experience.