Total viewers for the 6th Democratic debate on CNN/PBS: 6 million. Context: 18.1M tuned in for the first Democratic debate in late June. Math: More than 2/3 of the audience who watched 1st debate didn’t watch the 6th. Impeachment fatigue a factor, but still a big concern for DNC.

— Joe Concha (@JoeConchaTV) December 20, 2019