You're talking about college kids. By definition anyone qualified to be President is technically old enough to be their parents.
But here is the important point: go to ANY Tea Party meeting or any GOP rally and count the number of people under 35. It's one thing to say that (on average) the "youth" don't vote. But you better recognize that if they suddenly DECIDE to vote, they can and will swing an election, as they helped do in 2008.