Topics and Guests: February 4

Tonight... get on the record

He was the main man behind the Dean machine, but walked away in mid-campaign. What was really behind his decision?

Joe Trippi (search) speaks out to Greta, on tonight’s edition of "On the Record".

Don't miss "On the Record" tonight at 10 p.m. ET!

--All topics and guests subject to change.

--The Associated Press contributed to this story.