Viewership numbers for the first 4 weeks (2016 vs. 2017):
1) 2016: 17.0m
2) 2017: 15.8m (↓ 7%)
Viewership change by age group:
1) 18–34: ↓ 12%
2) 35–54: ↓ 6%
3) 55+:↓ 4%
The big question. Is the NFL’s viewership problem more older/conservative or younger/liberal?