UM is the most popular team in most of Michigan, plus parts of Indiana and Ohio.
An informal survey of football fans show Michigan Wolverines fans outnumber Michigan State fans (plus every other team) in the vast majority of the state.
You probably already knew that, but it's pretty cool to see on a map:
What's the most popular college football team in your county? https://t.co/Nqo2wipaaL pic.twitter.com/MxSlIjIUDx
— Campus Rush (@CampusRush) May 6, 2016
State fans are only a majority, per this Reddit poll of college football fans, in a few counties in western Michigan and the upper peninsula.