FROM CNN's Jack Cafferty: With the midterm elections only three weeks away, some Democrats are running scared – from their own president. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/10/12/art.chris.jpg caption="Rep. Chris Van Hollen (D-MD)"] Take Rep. Bill Owens, who won a special House seat in a conservative upstate New York district last year. He's out with an ad declaring that … Continue reading OK when Democrats run against Pres. Obama?