.
My guess has been that in 20 to 25 years we'll be the Euro-social democracy for which the Left is working so hard. Maybe a couple of steps to the left of modern-day France. So in ten years we'll be further into the process. I'd think the ride will remain bumpy, since there will still be many who don't think Americans should be "ruled" by a centralized authoritarian bureaucracy.
The one clear variable will be how quickly the Left can effectively dissolve the southern border. The more quickly they're successful, the more rapid the change will be. So you have to toss that one into the calculus.
.
Ten years from now, short of some unforeseen global disaster, things will be pretty much be the same, a few minor differences, a few wins for the Cons, a few wins for the libs, some new gadgets, some new things to be afraid of but that's about it.