Democratic presidential nominee Hillary Clinton returned to the campaign trail on Thursday, after having to miss several days due to pneumonia, and pledged that she would not step down from the race. Speaking at an event in Greensboro, North Carolina, Clinton began by saying, “It’s great to be back!” “I recently had a cough that turned out to be pneumonia. I tried to power through it,” she added, “but even I had to admit that a few days of rest would do me good. “I’m not great at taking it easy even under ordinary circumstances, but with just two months...