FROM CNN's Jack Cafferty: The Republicans' victory in Massachusetts could very well be the final nail in the coffin for the Democrats' health care reform. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/images/11/24/flushot.jpg caption=""] Exit poll data from one Republican firm shows the health care bill was the single most important issue to Massachusetts voters. This poll found 52 percent of … Continue reading How should Democrats proceed on health care?