You can never trust a person under 30. Brainwashed every one.
As I recall Reagan did fairly well with younger people. You however wont get anywhere if you flat out ignore them as both McCain and Romney did. Theres a ton of young people who are very open to a co servative message, but so far all they have been hearing from is Democrats and the Democrat Lite RINOs.
Someone who talks about true limited government, freedom and liberty would be quite welcome.