The irony of all is that MN is one of the whitest states in America.
Minnesota is about 17% non-white. That's not even close to being true, especially when compared to the western state and northern New England.
Northern MN also has a big german population
Uh, no? Northern Minnesota is more heavily Scandinavian and Eastern European than the state overall. The most heavily German parts are central Minnesota and parts of southern.
which is typically Democratic too.
Nope! Rural German areas are usually the most Republican in the state.
But anyway, one thing I noticed in the maps is that Minnesota is the only Midwestern state besides Illinois where Trump actually utterly collapsed in some traditionally Republican or swing areas. Look at the Hennepin County swing map and compare to 2012 and it'll make more sense.