I expect Mormons to trend Dem as the Republicans get more populist over time. This obviously doesn't mean UT and ID will be Democratic states, but more like 55% R than 65-70% R by the 2030's.
As for IL, Chicago's economic troubles will worsen, leading to population loss relative to the rest of the state. As unions become less relevant, Republicans will finally break through with the urban working class there.
Fair enough. Although, I can't really comment one way or the other on UT/ID. IL sounds plausible with population loss and the dissolution of the relevancy of unions, but I can only see this as a very long-term transformation, and that is assuming any number of things doesn't happen to reverse their woes or otherwise imperil the GOP in the state.
Btw Skill, I really like your posts!