A libertarian revolution
A Marxist revolution?
While I personally don't see either event on the horizon, I think that a more libertarian philosophy will be adapted by the American public over time. Not an extreme version of libertarianism, but something a bit more moderate. For now, I feel there is no movement towards Marxism, even though there is a decent amount of movement towards socializing things at this time. There simply isn't going to be a "Workers revolution" or anything of that nature. People already know the dangers inherent in the Marxist ideology and its ties to communism.
I think in the future, more people will vote for small government representatives. Whether or not those people live up to their campaign promises would remain to be seen.
I also think this stimulus bill will be either a life preserver for centralizing government, or an anchor, depending on its success/failure. Alot of people seem to think it will not work, and if that is the case, it will be evident and people will vote accordingly. We've had 8 years of an ever expanding government under Bush, the Republican Congress, and Democratic Congress. It looks to be like at least 4 more years of the same, if not more, with no restraint in sight. Eventually, there will have to be a substantitive change and I feel that it would trend towards smaller government in a true sense, not in the sense republicans have lied about for a good many years.