On the Democratic side Barack Obama has a map which allows one to go to local state pages. John Edwards and Hiliary Clinton do not use maps. There are some use of social networking sits though. The Republicans also use social networking like Facebook and MySpace but maps are rare as well. Rudy Guliani has "Why Rudy" testimonial maps but the Google Map mashup was down as of the post publishing. Mike Huckabee and Ron Paul have Meetup pages which have a map option for, well, meetups.
So neogeography fans, like many Americans, feel there is not a candidate for them.