I don't think Hillary will be on any kind of ice in 2020? But that is an interesting observation. Minnesota along with Maine, New Hampshire, and Colorado (and maybe Nevada but I'd doubt it) are all states Trump could flip in a close election.
I agree on the former three, but CO seems to be out of the step with the other 3 states. If the trends are magnified, CO moves further away while the other 3 come closer to. However, this all assumes that Trump will be a successful president. We can already tell that is not going to be the case.