Die-Hard or Fair-Weather Fans? Ranking All 32 NFL Fan Bases
Cowherd's Top 10 NFL Fanbases
The Geography of NFL Fandom - The Atlantic
Major League Sports Fans' Political Affiliations
Which NFL team has the most fans? Which one is the most popular? - AS USA
Fantasy vs. Reality: How Are NFL Fans Spending Their Money on ?
How Every NFL Team's Fans Lean Politically
The Most Popular NFL Teams by County, State
Biggest NFL fan base: Which NFL team has the most supporters?
Buffalo Bills become the most popular NFL team in New York, says DMV
American football - Wikipedia
What's the Most Popular NFL Team in Canada?
NFL Fan Chant Power Ranking
Major League Sports Fans' Political Affiliations