They use the web for research, news and fun. In general, they do not trust candidates' sites or the news sites. They hunger for websites put out by organizations with no agenda other than objectivity and disseminating relevant information on politics. On the candidates' sites, they want to see issue stances presented up-front, hard facts, accomplishments, admissions of failures, less salesmanship, telling pictures and strong design, with less negativity. Despite the fact that the Internet is more populated by young adults than their elders, these young people tend to trust traditional media more than web-based media.
Several reasons emerge for a lack of trust of the web.
I'd be pretty skeptical about who's e-mailing me back. It's going to come from an outside source. But even then, credibility was raised as a concern on the web. It's something that you're used to. On the other hand, a general distrust of all media came to the fore as well.