Which safe R states are most likely to become swing/blue states any time soon?

[Skill and Chance]

Kansas and Alaska.  Trump still had really strong appeal in LA/MS/AL, so I would place all of the Dem-trending western states ahead of them.  Utah could end up electing a lot of R-caucusing Mormon independents and giving its electoral votes to a 3rd candidate a couple of times, with some similarities to the Dixiecrat situation in the mid 20th century.  I would expect some Mormon 3rd party action in Idaho as well, probably not strong enough to get any pluralities statewide, but they could take ID-01 from the mainline Republicans.  It won't help the Democrats statewide in any meaningful way, though, just Mormon R-Ind. vs. mainline R.