FROM CNN's Jack Cafferty: The first match was good… the rematch could be even better. Imagine that Secretary of State Hillary Clinton decides to challenge President Obama for the Democratic nomination in 2012. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/10/04/art.hillary.jpg caption=""] Gallup is out with an interesting poll looking at that very hypothetical match up. 37 percent of Democrats say … Continue reading Hillary Clinton vs. Pres. Obama in 2012?