Do you consider Minnesota a swing state?

[Heisenberg]

Sadly no, As a Republican I badly want to break the streak, but I can't see it for at least two decades. Minnesota is more educated than Wisconsin, is seeing growth in its major metro area, and doesn't have enough non-MSP population to make up for the Twin Cities metro.

Honestly, in hindsight, 2016 would have been THE year to flip it. Think about it. Trump surprising by the world by not just winning the election, but by running up the score in rural America, and flipping (or nearly flipping) historically D working areas (Didn't win the Iron Range but did better than any other Republican in recent memory). Despite losing ground in wealthy White suburbs, the bottom was yet to collapse (see 2018/2020 for how much further they fell).
I think history will remember 2016 as a "turning the page" election, transitioning from the Sixth Party System to the Seventh Party System. The Trump 2016 coalition was a hybrid of the old Reagan/Bush(es) map combined with the coming "post-Trump GOP" map.