endorsed by vice president dan quayle. romney says he is definitely not going to the donald trump debate. the excuse is scheduling debate. some republicans aren't sure that having a reality host g.o.p. debate is not a good idea when they have to go up against obama in the fall, shep. >> shepard: now there is an attack ad in iowa that is significant because it is the first attack ad in iowa. >> that really tells you a whole lot about this race. in the past g.o.p. fight, shep, the attack ads started literally months ago. millions had been spent and a lot of by t. by mitt romney. a month from the caucus and it's ron paul who is launching the first negative attack ad. he is going after gingrich for supporting a health care mandate and profiteering in washington, d.c. as a washington insider. here is a little sample of it. >> support for an individual mandate? folks, don't ask me to explain this. >> everything that gingrich railed against when he was in the house, he went the other way when he got paid to go the