10/11 - Sec. Markwayne Mullin, Sen. Chris Murphy, Sen. John Barrasso, Rep. Chris Pappas, Shyam Sankar

This week on "Face the Nation with Margaret Brennan," as campaigning ramps up in the final sprint before the midterm elections, Senate Republican Whip Rep. John Barrasso and Democratic New Hampshire Senate candidate Rep. Chris Pappas join. Plus, Homeland Security Secretary Markwayne Mullin joins.