I like to think that the Internet is going to make voters even more informed over time, so they won't get disillusioned and apathetic and play into the hands of those who want them to stay home. As the "greatest generation" becomes a smaller part of the population, I think the mood will shift left as well.
I also think that's why there's so much desperation in the states by the Republicans to ram through as much as they can on voter restrictions, union restrictions, tax cuts, budget cuts, privatization, etc., etc. They know that demographics are not on their side.
But who knows. Only time will tell. :-/
Cheers,
Scott.