I can't see the GOP winning Minnesota unless there is a massive Republican landslide in any election for the foreseeable future.
As is well known, Minnesota has not gone Republican in a presidential election in almost 50 years. I wonder if Minnesota could match the losing streaks that Democrats experienced in Michigan, Pennsylvania, and ironically, Minnesota itself, from the 1850s to the 1930s. Franklin Roosevelt in 1932 was the first Democrat ever to win Minnesota and the first to win Michigan since 1852, and in 1936 he was the first to win Pennsylvania since 1856.