Easy, they use their brains.

Via RCP:

Toure to chairman of College Republicans Alex Schriver: “I generally find young Republicans to be a sort of strange breed. Most young people, regardless of who’s at the top of the ticket, most young people tend to be Democrats and it’s been that way for a long time. So when I meet a young Republican, I want to put him on a couch and be like, ‘how did this happen to you?’ and ‘how might you be saved?’ Can you talk a little bit just philosophically about why you’re a Republican, and how old are you by the way?”

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