I am still confused on why there is a fall in turnout in the Midwest. Urban Midwest is most likely falling AA turnout but there was a Trump surge in rural Midwest which should indicate a surge in turnout.
Regionally there was a greater decline in Democratic voters from 2012 to 2016 in the Midwest relative to the increase in Republican voters.
For example, in Florida Trump was able to increase his votes substantially, but so was Clinton also. Several Midwestern states would have gone for Clinton if all Obama voters had stayed with her.
I ran all this data on a spreadsheet at one point, but it would be cool is someone could summarize or map the country based on which places had vote swings driven by cool Democrats or excited Republicans and vice versa.