FROM CNN's Jack Cafferty: Much like the Democrats themselves, President Obama's signature issue of health care reform might get quite a beating in the midterm elections. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/10/06/art.xray.jpg caption=""] For starters, three states will vote on proposed constitutional amendments that would let them opt out of key provisions in the health care law. Arizona, Colorado … Continue reading Would promise to undo health care get you to vote for a Republican?