Face the Nation 2016 diary, January 4: Donald Trump's first television ad
Welcome to the "Face the Nation" 2016 diary - a recurring feature that will bring you the latest news and analysis on the 2016 election from CBS News political director and "Face the Nation" moderator John Dickerson.
In the January 4 episode of the diary, Dickerson discusses the strategic calculus behind Republican candidate Donald Trump's first television advertisement.