Dems Make Their Final Iowa Pitches on Airwaves

Obama two-minute spot, stressing a sense of urgency, emphasizes... change. Watch it above. Read script here.

Clinton two-minute ad makes her plea to caucus-goers, touting positions, credentials. Watch it here.

Edwards' 60-second spot uses Iowan, former Maytag employee's testimonial to make his case. Watch it here.