Meh! As @Frank Cannon would say, "who cares?"
I don't believe the position of First Lady should be a popularity contest anyway. It's stupid. I think Mrs. Trump is doing the best she can under some difficult circumstances.
I think most First Ladies have had their detractors at least one time or another. And there ere some like Hillary who were worshipped for no better reason than she was a woman. She certainly wasn't all that wonderful as First Lady.
Besides, this poll, like every other poll, is no doubt flawed. Who did CNN sample for this poll? Democrats?
I don't believe this poll for a minute. I go by my Facebook page on which Melania is probably the most popular and admired person in America.