I'd actually wager that Utah would be definitely voting Democratic in 20 years.
And Wisconsin will vote Republican in 20 years. What becomes Democrat in certain areas of the US, others turn Republican. The entire US is not going to trend Democrat or Republican, there is a balance that has to be acheived so this country doesn't get worse than it's already.
Probably. Wisconsin has been trending that way for at least 20 years already. I would say more areas will become democratic because of the demographic change trainwreck for the Republican party. There won't be a balance for 10-20 years until Republican party implodes/radically shifts into something else, since it most likely won't be able to keep with the voters beforehand.