A very good overview of the 08' presidential candidates of both parties. Many of these candidates have not yet confirmed that they are running. Some of them insist they're not.
http://www.cqpolitics.com/2006/11/from_cq_weekly_the_08_race_for.html
http://www.cqpolitics.com/2006/11/from_cq_weekly_the_08_race_for.html