Whatever the long-term prospects are (and, as someone has mentioned upthread, Minnesota's been about to become a Republican state for about 20 years, and somehow never quite does), it's pretty clear that Trump's shtick tends to work very poorly in the Dukakis Midwest states.
FWIW it has been 10 years since any Republican has won a statewide race in Minnesota (Tim Pawlenty 2006) and 22 years since any Republican has gotten 50%+ of the vote (Arne Carlson 1994). If anything Minnesota is trending Democratic.
