Professor David Schultz Hamline University:
https://www.hamline.edu/faculty-staff/david-schultz/
2018 Profesor Schultz on CSPAN talking Minnesota Politics:
Books referenced:
Bill Bishop, The Big Sort : Why the Clustering of Like-Minded America is Tearing Us Apart
Professor Schultz Publications:
https://www.amazon.com/David-A.-Schultz/e/B001ITRGIG%3Fref=dbs_a_mng_rwt_scns_share